Rosemount Temperature Sensors and Accessories - Transcat

Product Data Sheet 

00813-0100-2654, Rev GB 

April 2010 

• Standard Immersion Sensors 

• Available with Many Standard Process 

Connections 

• Calibration Capabilities 

Sensors and Accessories (English) 

Temperature Sensors and Accessories 

(English) 

Content 

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2 

Threaded Mount Sensors and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10 

Ordering Tables 

Series 68 RTD Sensor Assemblies WITHOUT Thermowell. . . . . . . . . . . . . . . . . . . . . . page 13 

Series 68 RTD Sensor Assemblies WITH Thermowell. . . . . . . . . . . . . . . . . . . . . . . . . page 17 

Series 78 RTD Sensor Assemblies WITHOUT Thermowell. . . . . . . . . . . . . . . . . . . . . . page 25 

Series 78 RTD Sensor Assemblies WITH Thermowell. . . . . . . . . . . . . . . . . . . . . . . . . . page 29 

Series 68Q Sanitary Platinum RTD Sensor Assemblies . . . . . . . . . . . . . . . . . . . . . . . . page 37 

Series 58C Cut-to-Fit RTD Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 40 

Series 183 Thermocouple Sensor Assemblies WITHOUT Thermowell. . . . . . . . . . . . . page 42 

Series 183 Thermocouple Sensor Assemblies WITH Thermowell . . . . . . . . . . . . . . . . page 45 

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51 

Mounting Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 63 

Ordering Tables 

Connection Head Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 64 

Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 65 

Compression Fittings, 316 SST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 66 

Series 91 Thermowell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 71 

Hazardous Area Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 82 

www.rosemount.com



00813-0100-2654, Rev GB 

April 2010 

Introduction 

OVERVIEW 

Emerson Process Management offers a wide variety of RTD and 

thermocouple sensors that are available alone or as complete 

assemblies including connection heads, thermowells, and 

extension fittings. In addition to complete assemblies, Emerson 

Process Management offers heads, coupling/nipple and 

union/nipple extensions, compression fittings, and thermowells. 

Using this Product Data Sheet (PDS) 

Use this PDS to order complete temperature sensor assemblies, 

which include sensors, thermowells, extensions, and connection 

heads. These options can also be ordered separately. For 

example, you can order a thermowell, extension, or connection 

head for use with an existing sensor. In each case it is important to 

know and understand the sections of this PDS when specifying the 

items. 

Threaded Sensors and Assemblies 

• Includes descriptions, specifications, and ordering information 

for Series 58C, 68, 68Q, and 78 RTDs, and the Series 183 

thermocouples. 

• Includes information for ordering sensors, connection heads, 

extensions, and thermowells as complete assemblies. 

Calibration 

• Includes characterization schedules and information for 

ordering calibrated Series 68, 68Q, and 78 RTD Sensors. 

• Includes information regarding the use of Callendar-Van 

Dusen constants to match specific Series 68, 68Q, and 78 

RTDs to Rosemount Smart Temperature Transmitters. 

Mounting Accessories 

• Includes descriptions, specifications, and ordering information 

for temperature accessories such as thermowells, extensions, 

connection heads, mounting adapters, lead wire extensions, 

connectors, seals, and thermowells. 

Hazardous Area Approvals 

• Includes descriptions of the FM, CSA, SAA, and ATEX 

approvals for sensors and connection heads. 

Configuration Data Sheet 

• Provides a form used for thermowell application calculations. 

Series 58C, 68, 68Q, and 78 platinum RTD 

temperature sensors are primarily used when high accuracy, 

durability, and long-term stability are required. These sensors 

conform to international standards: IEC-751, EN 60751, and BS 

EN 60751. (1) 

Series 58C platinum RTD temperature sensors: 

• Combine an economical thin-film design with a sheath that 

can be shortened to any length with tubing cutter. 

Series 68Q Quick Response Sanitary RTD sensors: 

• Conform to 3–A Sanitary Standards and feature product 

contact surfaces designed for CIP cleaning. 

Series 68 platinum RTD temperature sensors: 

• Provide high performance in an economical thin-film design. 

Series 78 platinum RTDs temperature sensors: 

• Use a wire-wound element which allows for a broader 

measurement range. 

Thermocouples 

Series 183 thermocouple temperature sensors conform to ASTM 

E-230, and are available in types J, K, E, and T. 

Series 183 thermocouple temperature sensors are available: 

• grounded or ungrounded 

• isolated or unisolated 

• with immersion lengths from 2 to 48 inches. 

(1) 100 ohms at 0 °C, = 0.00385 ohms/ohm/°C 

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00813-0100-2654, Rev GB 

April 2010 


The Use of 2-, 3-, and 4- wire RTDs 

To help you attain the highest possible temperature measurement accuracy, Rosemount provides 4-wire sensors for all single element RTDs. 

You can use these RTDs in 2-, 3-, or 4-wire configurations by simply securing the unneeded leads with tape. To properly wire the 4-wire RTD 

for use in a 2-, 3-, or 4-wire configuration, refer to the following wiring diagrams: 

2-wire Configuration 

2-wire RTDs provide one connection to each end of the sensor. In a 2-wire configuration, lead wires add 

resistance to the circuit which cannot be compensated. The 2-wire configuration is rarely used because the 

added lead wire resistance can cause substantial errors in the temperature reading. 


3-wire RTDs provide one connection to one end of the sensor, and two connections to the other end. The 

3-wire approach does not eliminate all lead wire effects. However, for sensors with lead wires of the same 

length, lead wire effects are slight, and the approach provides reasonable accuracy. 


The most effective way to eliminate lead wire effects is with two connections at each end of the sensor. 

4-wire RTDs fully compensate for lead wire effects. 

Benefits and Limitations of RTDs when compared to Thermocouples 

Benefits: 

• Higher accuracy 

• Better linearity and long-term stability 

• Cold junction compensation not required 

• Special extension lead wire not required 

• Less susceptible to noise 

• Can be “matched” to a Rosemount transmitter with transmitter sensor matching 

Limitations 

• Lower maximum temperature limit 

• Slower response time in applications without a thermowell 

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00813-0100-2654, Rev GB 

April 2010 

HOW TO DECIDE WHAT TO ORDER 

Start 

(Select One) 

Is a sensor and a 

thermowell needed? 

Is a sensor for an 

existing thermowell 

needed? 

Is a thermowell for an 

existing sensor 

needed? 

Yes 

Yes 

Yes 

Refer to Table 1. Do any 

standard lagging 

length/immersion length 

combinations meet the 

requirements? 

Select a sensor without a 

thermowell 

Select a thermowell 

Yes 

No 

Select a sensor with 

a thermowell 

combination 

1. Select a sensor 

without a thermowell 

combination 

2. Select a thermowell 

Finish 

If Rosemount sensor and model code is visible on the Sensor: 

1. If the thermowell is ordered separately (0078P23C30N060) 11th digit = ‘N’ 

a. Start with immersion length - digits 12-14; 060 = 6.0 in. 

b. Add extension length - digits 9 & 10; 30 = 3.0 in. (3 + 6 = 9) 

Order the replacement sensor for the total length without connection heads (5th digit N) and extension (8th digit N) 0078N23N00N090 

2. If the thermowell is ordered integral to sensor (0078P23C30A060W40) 11th digit = not ‘N’ 

a. Immersion length ‘U’ is defined by the 12-14th digits; 060 = 6.0 in. 

b. Look up ‘L’ length from the correct order chart for given ‘U’ length. This will be 4 inches for short sensors, or a whole number 

divisible by 3 for sensors longer than 4 inches (4, 6, 9, 12, 15, 18... inches); 

‘U’ 060 = 9 inches ‘L’ 

c. Add extension length as defined by 9th and 10th digits; 30 = 3.0 in. to the ‘L’ length found in table. 

(9” + 3” = 12”, Length code 120) 

d. This will be the replacement sensor length ‘X’. 

Order sensor without connection head (5th digit N) or extension (8th digit N) 0078N23N00N120 

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00813-0100-2654, Rev GB 

April 2010 


If model code is NOT visible on the sensor, follow one of the three instructions below: 

1. Measure the inside depth of the thermowell *preferred* 

a. Measure down the inside of the thermowell hole to the top-most face of the extension used, or the thermowell if no extension 

b. This will be the replacement sensor length if depth = 12.0 in., sensor length will be 12 in. 

Order sensor without connection heads (5th digit N) or extension (8th digit N) 0078N23N00N120 

2. Measure the overall outside length of the thermowell from end to end. 

a. Measure down the outside of the thermowell from the tip to the end face of the extension if used, or the thermowell if no extension. 

b. Subtract 1/4 in. to account for thickness of the thermowell at the tip. 

c. This will be the replacement sensor length. Overall length = 12.25 in., the replacement will be 12 in. 


3. Measure the old sensor length from tip to the flat face of the threaded process connection. 

a. Determine if the sensor is spring loaded or general purpose (welded) where the sensor sheath meets the threaded adaptor. 

b. For spring loaded sensors, the measurement of the exposed sheath from tip of the start of the threaded portion will be the same as 

the replacement sensor length. 

• Normal spring compression for a Rosemount sensor is assumed to be 1/2 in. and the normal thread 

engagement is also assumed to be 1/2 in. 

• Round to the nearest whole 1/4 in. increment as the spring will make up any small differences 

• Replacement sensor for a spring loaded sensor measuring 6.5 inches will be 6.5 in. length 


c. For general purpose sensors with the distance from tip to threaded adapter: 

• Add 1 /4 in. to allow clearance, preventing bottoming sensor during installation. 

• Add 1 /2 in. for the thread engagement of the sensor in the thermowell. 

• The replacement sensor for a general purpose sensor measuring 5.75 in. from the tip to the 

threaded adaptor is 6.5 in. (5 3 /4 + 1 /4 + 1 /2 = 6 1 /2 in). 


If model code is visible on the thermowell (0091A060W40T015P) follow the instructions below to determine 

sensor model number: 

a. Start with immersion length digits 6-8, 060 = 6.0 in. 

b. Add additional lagging length digits 13-15, 015 = 1.5 in. 

c. To those lengths add 1.5 in. (this is the additional standard lagging length on all Rosemount thermowells) 1.75 in. minus (0.25 in. 

thermowell tip thickness) = 1.50 in. 

d. 6.0 +1.5 +1.5 = 9 in. 

Order replacement sensor 0078N23N00N090 

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00813-0100-2654, Rev GB 

April 2010 

SPRING-LOADED SENSOR DIMENSIONS 

When a spring-loaded sensor is used properly, the spring should be compressed approximately 1 /2-inch. Therefore, all measurements of 

spring-loaded sensors are made with the spring compressed. If you measure an existing spring-loaded sensor while it is in a relaxed state, you 

must subtract 1 /2-inch to arrive at the installed length (X) that must be ordered. See Figure 1. 

FIGURE 1. Spring Loaded Sensors Dimensions 

Compressed Spring Loaded Sensor 

3.45 (88) 

Max. 

Installed (X) Length 

[Spring Compressed 

0.5 (13) nominal] 

0.5 

Spring loaded sensor in a compressed state: The actual sensor length is measured when the spring is compressed approximately 1 /2-in. 

shorter than the relaxed sensor. 

Relaxed Spring Loaded Sensor 

2.95 (88) Max. 

Installed (X) Length + 0.5 in. 

Spring loaded sensor in a relaxed state: Normally, when a spring loaded sensor is measured, it is in a relaxed state. You must subtract 1 /2-in. 

from your measurement to order a replacement sensor. Rosemount Inc. assumes that the sensor length you specify is that of a compressed 

sensor. 

Determining the Length (L) of a spring-loaded sensor 

to be used with an existing non-Rosemount 

Thermowell 

See Figure 1, Figure 3, and Figure 4. 

1. Remove the existing generic sensor from the installed thermowell. Length Code Key 

2. Measure the sensor length with the spring in the relaxed state (as shown in 

L Thermowell length minus 0.25 in. 

Figure 1). Measure from the tip of the sensor to the maximum thread engagement U Immersion length into process 

point (0.53 in. into the threads). 

T Lagging length 

3. Subtract 0.5 inches from your measurement. The resulting length is (X). E Extension fitting length 

4. If the sensor is installed with an extension, measure the extension length (E), as X Sensor length 

shown in Figure 4. If the sensor is not installed with an extension, let (E) = 0. 

Use the following equations to determine 

all lengths 

5. Since (X) = (E) + (L), subtract (E) from (X) to find (L). 

Use the resulting length (L) in the Section 2 ordering tables to choose the correct length 

of sensor. 

L = U + T + 1.5 

X = E + L 

X = E + U + T + 1.5 

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00813-0100-2654, Rev GB 

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FIGURE 2. Thermowell Dimensions (use with Table 1) 

Sensor with Thermowell (no extensions) 

L 

0.25-in. 

T 

1.75-in. 

U 

TABLE 1. Dimensions for thermowells when ordered with sensors (U), (L), and (T). Use with Figure 2. 

Dimensions (in.) (1) 

Code (U) (L) (T) Code (U) (L) (T) Code (U) (L) (T) 

020 2.0 4.0 0.5 090 9.0 12.0 1.5 160 16.0 18.0 0.5 

025 2.5 4.0 0.0 095 9.5 12.0 1.0 165 16.5 18.0 0.0 

030 3.0 6.0 1.5 100 10.0 12.0 0.5 170 17.0 21.0 2.5 

035 3.5 6.0 1.0 105 10.5 12.0 0.0 175 17.5 21.0 2.0 

040 4.0 6.0 0.5 110 11.0 15.0 2.5 180 18.0 21.0 1.5 

045 4.5 6.0 0.0 115 11.5 15.0 2.0 185 18.5 21.0 1.0 

050 5.0 9.0 2.5 120 12.0 15.0 1.5 190 19.0 21.0 0.5 

055 5.5 9.0 2.0 125 12.5 15.0 1.0 195 19.5 21.0 0.0 

060 6.0 9.0 1.5 130 13.0 15 0.5 200 20.0 24.0 2.5 

065 6.5 9.0 1.0 135 13.5 15.0 0.0 205 20.5 24.0 2.0 

070 7.0 9.0 0.5 140 14.0 18.0 2.5 210 21.0 24.0 1.5 

075 7.5 9.0 0.0 145 14.5 18.0 2.0 215 21.5 24.0 1.0 

080 8.0 12.0 2.5 150 15.0 18.0 1.5 220 22.0 24.0 0.5 

085 8.5 12.0 2.0 155 15.5 18.0 1.0 225 22.5 24.0 0.0 

(1) L = U + T + 1.5 

Ordering a Sensor and a Thermowell 

See Figure 2 and Table 1 and Figure 3 and Figure 4. Use the following Procedure to determine if a standard lagging length can be use with the 

sensor and thermowell. 

1. Determine the (U), (T), and (E) lengths necessary for your installation. 

If you do not need an extension, (E) = 0 (zero). 

Note: If your existing sensor/thermowell combination is different than Figure 3, refer to 

the drawings on the following pages. 

2. Find your immersion length (U) on Table 1 above and compare the corresponding 

lagging length (T) to the lagging length that you previously determined. 

3. If your lengths match the values on the line that corresponds to your required 

immersion length, order your sensor and thermowell together. 

If your lengths do not match the values on the line that corresponds to your measured 

immersion length, order your sensor and thermowell separately. Solve for (L) using the 

equation (L) = (U) + (T) + 1.5 (since (L) is required when ordering the sensor separately 

from the thermowell). 

Length Code Key 

L Thermowell length minus 0.25 in. 

U Immersion length into process 

T Lagging length 

E Extension fitting length 

X Sensor length 

Use the following equations to determine 

all lengths 

L = U + T + 1.5 

X = E + L 

X = E + U + T + 1.5 

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00813-0100-2654, Rev GB 

April 2010 

FIGURE 3. Series 68, 78, and 183 Sensor Assembly Dimensional Drawings 

Capsule Sensor Only 

Lead Wires (see Table 2) 

1.75 (44) Nominal (X) Length 

1.25 (32) 

0.35 (8.9) 

Housing Diameter (see Table 2) 

* Maximum sensing element length for Series 78 dual-element = 1-in. (25 mm) 

General Purpose Sensor Assembly 

0.6 (15) Max. Sensing Element* 


3.2 (81) Max. 

Nominal (X) Length** 

Weld 360° 

0.25 (6) 

0.25 (6) 

Fixed-Position Process Mounting 

Connection ( 1 /2–14 ANPT, both sides) 


0.53 (13) Max. Thread Engagement 


** Actual length is 0.25 (6) less to avoid bottoming in thermowell 

Spring Loaded Sensor Assembly 


3.45 (88) 

Max. 

Installed (X) Length ** 

0.25 (6) 

Spring-Positioned Process Mounting 

Connection ( 1 /2–14 ANPT, both sides) 


** Spring Compressed 0.5 (13) 

Bayonet Spring Loaded Sensor Assembly 



4.75 (121) 

Max. 

2.5 (64) 

Max. 

Installed (X) 

Length ** 


0.25 (6) 

Bayonet Adapter Mounting Connection 

( 1 /2–14 ANPT, both sides) 


* Spring is shown compressed 0.5 -in.(13 mm.) Do not adjust the equations in Table 2 when calculating X, L, U, and T lengths. The equation 

already accounts for spring compression. 

Dimensions are in inches (millimeters) 

TABLE 2. Sensor Series and Dimensions 

Series Housing Diameter Lead Wires Lead Wire Length Series Housing Diameter Lead Wires Lead Wire Length 

in mm in mm in mm in mm 

68 0.350 8.0 4 6.0 152.4 183 single 0.375 9.53 2 6.0 152.4 

78 single 0.350 8.0 4 6.0 152.4 183 dual 0.375 9.53 4 12.0 304.8 

78 dual 0.350 8.0 6 6.0 152.4 

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00813-0100-2654, Rev GB 

April 2010 


FIGURE 4. Series 68, 78, and 183 Sensor Assembly Length Code Drawings 

Sensor with Thermowell (No Extension) 

Sensor Mounting Connection 

X 

L 

0.25 (6) 

T + 1.75 (44) 

U 

Sensor with Extension (No Thermowell) 

Nipple 

Sensor Mounting Connection 

Coupling 

1 /2–14 ANPT Thread 

E 

L 

Sensor Installed in Connection Head (Flat Cover) with Union and Nipple Extensions and Thermowell 

X 

X 

0.25 (6) 

5.5 (140) 

Extended Cover 

3.5 (89) 

Flat 

Cover 

Union 

E 

L 

Nipple 

Sensor Mounting 

Connection 

Thermowell 

T + 1.75 (44) 

U 

3 /4–14 ANPT 

Chain 


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00813-0100-2654, Rev GB 

April 2010 

Threaded Sensors and Assemblies 

Series 68, 68Q, and 78 RTD and Series 183 Thermocouple 

Sensors may be ordered as complete assemblies. These 

assemblies provide a complete, yet simple means of specifying 

the proper industrial hardware for most temperature 

measurements. 

One assembly model number, derived from one ordering table, 

completely defines the type of sensing element, as well as the 

material, length, and style of both the extension fittings and 

thermowells. All sensor assemblies are sized and inspected by 

Rosemount Inc. to ensure complete component compatibility and 

performance. 

FIGURE 5. Individual Components of a Complete Temperature Assembly 

Optional Identification Tag 

Standard Adapter Sensor Assembly 

X 

0.5 (13) Nominal Engagement 

Lead Wire Extensions and Seals 

E 

Coupling-Nipple 

L 

0.5 (13) Nominal 

Engagement 

Union-Nipple 

Extensions 

Flat or Extended Cover Aluminum Connection Heads 

Threaded 

Thermowells 

T+1.75 

Welded 

U 

Polypropylene Connection Head 

Flanged 

Rosemount Aluminum Connection Head 


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00813-0100-2654, Rev GB 

April 2010 


MOUNTING CONFIGURATIONS 

Capsule 

Capsules are designed for direct immersion without mounting 

fittings. Accessory compression fittings are available for adjustable 

mounting into a thermowell. See Mounting Adapters for Series 58, 

68, 78, and 183. 

General-Purpose Sensor Assemblies 

Designed with a welded, fixed-position 1 /2–14 ANPT process 

connection fitting for direct immersion or thermowell applications, 

this sensor design provides a moisture-proof and vapor-tight seal. 

The maximum static working pressure at 20 °C (68 °F) with no 

vibration or flow condition is 31.59 MPa (3,500 psig). The use of a 

thermowell is recommended for process pressure containment. 

Note that standard lengths are 1 /4 inch less than nominal 

dimension to prevent bottoming of the sensor in a thermowell. 

Spring-Loaded Sensor Assemblies 

Spring-loaded sensors have a spring-positioned, 

1 /2–14 ANPT process connection fitting that ensures good surface 

contact in thermowells for faster time response and vibration 

resistance. Spring-loaded sensors are not intended to provide a 

process seal. They must be used in conjunction with a thermowell 

for this purpose. 

NOTE 

When a spring-loaded sensor is used properly, the spring should 

be compressed approximately 1 /2-inch. 

Bayonet Spring-Loaded Sensor Assemblies 

Bayonet assemblies have the same advantages as the 

spring-loaded sensor. However, the bayonet connector permits the 

sensor to be easily removed from the process without tools. 

FIGURE 6. Series 68, 68Q, 78, and 58C 

Lead Wire Configurations 

Single Element Dual-element (1) 

Red 

Red 

White 

White 

White 

White 

Red 

Green 

Green 

Black 

(1) Dual-element sensors are only available on Series 68Q and 78 sensors. 

SERIES 68 PLATINUM RTD 

Rosemount Series 68 Platinum resistance temperature sensors 

measure from –50 to 400 °C (–58 to 752 °F). Series 68 Class B, 

Pt100-385 sensors are available in capsule, general purpose, and 

spring-loaded designs in sensor lengths from 1 to 48 inches. 

Table 3 shows the interchangeability of the Series 68 RTD. As an 

option, for maximum system accuracy, Rosemount Inc. can 

provide sensor calibration. See Sensor Characterization 

(Calibration) Schedules– Option Code V. In addition, Rosemount 

Inc. offers optional sensor-to-transmitter matching capability 

obtainable through the use of Callendar-Van Dusen Constants. 

See Option Code “V” Callendar-van Dusen Constants. 

TABLE 3. Series 68 Interchangeability 

• ±0.55 °C (±0.99 °F) at -50 °C (-58 °F) 

• ±0.30 °C (±0.54 °F) at 0 °C (32 °F) 

• ±0.80 °C (±1.44 °F) at 100 °C (212 °F) 

• ±1.30 °C (±2.34 °F) at 200 °C (392 °F) 

• ±1.60 °C (±2.88 °F) at 260 °C (500 °F) 

• ±2.30 °C (±4.14 °F) at 400 °C (752 °F) 

Construction 

FIGURE 7. Construction of a Platinum Thin Film RTD 

Connection Seal 

Connection Leads 

Connection Pads 

Passivation with 

Glass Layers 

Photolithography 

Structured Platinum 

Thin Film 

Al 2 O 3 Substrate 

Design and construction of the Series 68 Platinum Sensors 

provides the optimum combination of accuracy and durability 

available for temperature measurements. The construction of the 

sensor allows for direct immersion in non-corrosive fluids at 

reasonable static pressures. For corrosive environments or many 

industrial applications, these sensors are widely used with 

standard thermowell assemblies. 

Platinum Element and Lead Wire Configurations 

Single-element temperature sensors have four lead wires and may 

be used in 2-, 3-, and 4-wire signal conditioning systems. 

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00813-0100-2654, Rev GB 

April 2010 

Specifications 

Performance 

Temperature Range 

–50 to 400 °C (–58 to 752 °F) 

Effect of Temperature Cycling 

±0.05% (0.13 °C or 0.23 °F) maximum ice-point resistance shift 

following 10 cycles over the specified temperature range. 

Stability 

±0.11% maximum ice-point resistance shift following 1,000 hours 

at maximum specified temperature (400 °C). 

Maximum Hysteresis 

±0.1% of operating temperature range. 

Time Constant 

12 seconds maximum required to reach 63.2% sensor response in 

water flowing at 3 ft/s (0.91 m/s). 

Nominal R0 100 Ohm 

Nominal alpha .00385 C-1 

Environmental 

Humidity Limits 

• Lead seal can withstanding 100% relative humidity. 

Vibration Limits 

• ±0.05% maximum ice-point resistance shift due to 30 minutes 

of 14 g peak vibration from 5 to 350 Hz at 20 °C (68 °F) for 

unsupported stem length of less than 6 inches. 

Quality Assurance 

• Each sensor is subjected to a resistance accuracy test at 0 °C 

and a insulation resistance test. 

Enclosure Ratings 

• When installed properly, Rosemount Series 68 sensors are 

suitable for indoor and outdoor NEMA 4X and CSA Enclosure 

Type 4X installations. See Hazardous Area Approvals for 

complete installation information. 

Insulation Resistance 

1000 10 6 ohms minimum insulation resistance when measured 

at 500 Vdc at room temperature. 

Physical Specifications 

Sheath Material 

316 SST. / 321 SST. 

Lead Wire 

PTFE insulated, nickel-coated, 22-gauge stranded copper wire. 

Identification Data 

The model, serial numbers, and up to six lines of permanent 

tagging information are etched on each sensor. Stainless steel 

tags are available upon request. 

Weight 

• Capsule sensors: 5 oz 

• General-purpose and spring-loaded sensors: 9 oz 

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00813-0100-2654, Rev GB 

April 2010 


ORDERING INFORMATION 

TABLE 4. Series 68 RTD Sensor Assemblies WITHOUT Thermowell 

★ The Standard offering represents the most common options. The starred options (★) should be selected for best delivery. 

__The Expanded offering is subject to additional delivery lead time. 

Model Product Description Available Safety Approvals 

0068 Platinum Temperature Sensor WITHOUT thermowell 

Sensor Lead Wire Termination 

FM 

ATEX 

CSA 

SAA 

Standard 


R Aluminum Connection Head, Six Terminals, Flat Cover, Unpainted Y Y Y N ★ 

T Aluminum Connection Head, Six Terminals, Extended Cover, Unpainted Y Y Y N ★ 

P Aluminum Connection Head, Six Terminals, Flat Cover, Painted Y Y Y N ★ 

L Aluminum Connection Head, Six Terminals, Extended Cover, Painted Y Y Y N ★ 

N Sensor only with 6-in. Teflon ® -insulated, 22-gauge lead wires Y Y Y N ★ 

D Rosemount Aluminum Connection Head with 1 /2-in. Entries Y Y Y Y ★ 

Expanded 

C Polypropylene Connection Head N N N N 

G Rosemount SST Connection Head with 1 /2-in. Entries Y Y Y Y 

Sensor Type (single element -50 to 400 °C (-58 to 752 °F)) 



01 (1)(2) Capsule Style ★ 

11 (3) General-purpose style ★ 

21 (4) Spring-loaded style ★ 


31 (5) Bayonet spring-loaded style (not available in (X) lengths over 21 inches) 

Extension Type 



A Nipple Coupling ★ 

C Nipple Union ★ 

N None ★ 

Extension Length (E) 



00 0.0 in. ★ 

30 3.0 in. ★ 

60 6.0 in. ★ 

Thermowell Material 



N No thermowell required ★ 

Immersion Length (L) 



010 (1)(6) 1.0-in. ★ 

015 1.5-in. ★ 

020 2.0-in. ★ 

025 2.5-in. ★ 

030 3.0-in. ★ 

035 3.5-in. ★ 

040 4.0-in. ★ 

045 4.5-in. ★ 

050 5.0-in. ★ 

055 5.5-in. ★ 

060 6.0-in. ★ 

065 6.5-in. ★ 

070 7.0-in. ★ 

075 7.5-in. ★ 

080 8.0-in. ★ 

085 8.5-in. ★ 

090 9.0-in. ★ 

13



00813-0100-2654, Rev GB 

April 2010 






095 9.5-in. ★ 

100 10.0-in. ★ 

105 10.5-in. ★ 

110 11.0-in. ★ 

115 11.5-in. ★ 

120 12.0-in. ★ 

125 12.5-in. ★ 

130 13.0-in. ★ 

135 13.5-in. ★ 

140 14.0-in. ★ 

145 14.5-in. ★ 

150 15.0-in. ★ 

155 15.5-in. ★ 

160 16.0-in. ★ 

165 16.5-in. ★ 

170 17.0-in. ★ 

175 17.5-in. ★ 

180 18.0-in. ★ 

185 18.5-in. ★ 

190 19.0-in. ★ 

195 19.5-in. ★ 

200 20.0-in. ★ 

205 20.5-in. ★ 

210 21.0-in. ★ 

210 21.5-in. ★ 

220 22.0-in. ★ 

225 22.5-in. ★ 

230 23.0-in. ★ 

235 23.5-in. ★ 

240 24.0-in. ★ 

245 15.5-in. ★ 

250 25.0-in. ★ 

260 26.0-in. ★ 

270 27.0-in. ★ 

280 28.0-in. ★ 

290 29.0-in. ★ 

300 30.0-in. ★ 

310 31.0-in. ★ 

320 32.0-in. ★ 

330 33.0-in. ★ 

340 34.0-in. ★ 

350 35.0-in. ★ 

360 36.0-in. ★ 

370 37.0-in. ★ 

380 38.0-in. ★ 

390 39.0-in. ★ 

400 40.0-in. ★ 

410 41.0-in. ★ 

14


00813-0100-2654, Rev GB 

April 2010 







420 42.0-in. ★ 

430 43.0-in. ★ 

440 44.0-in. ★ 

450 45.0-in. ★ 

460 46.0-in. ★ 

470 47.0-in. ★ 

480 48.0-in. ★ 

OPTIONS 

Approval Options 



E5 FM Explosion-proof approval (See Figure 26) ★ 

E6 CSA Explosion-proof approval (See Figure 27) ★ 

E7 (7) SAA Flameproof approval (See Figure 30) ★ 

Callendar-Van Dussen Constants 



V1-V8 V-Callendar-van Dussen Constant (V4 not available with series 68 sensors) ★ 

Calibration Schedule 



X8 Customer-Specified Temperature Range Calibration ★ 

X9 Customer-Specified Single Temperature Point Calibration ★ 

Calibration Certification 



Q4 Calibration Certification, Customer-Specified Temperature ★ 

Mounting Adapters 



M5-M7 Mounting adapter: Sensor Compression Fitting: M5= 1 /8 - 27 NPT, M6 = 1 /4 - 18 NPT, M7 = 1 /2 - 14 NPT ★ 

A Leadkit 



A1-A8 Twisted lead wire extension: A1 = 1.5 ft, A2 = 3.0 ft, A3 = 6.0 ft, A4 = 12 ft, A5 = 24 ft, A6 = 50 ft, A7 = 75 ft, A8 = 100 ft ★ 

B Leadkit 



B1-B8 (8) Shielded cable lead wire extension: B1 = 1.5 ft, B2 = 3.0 ft, B3 = 6.0 ft, B4 = 12 ft, B5 = 24 ft, B6 = 50 ft, B7 = 75 ft, B8 = 100 ft ★ 

C Leadkit 



C1-C8 (8) Armored cable lead wire extension: C1 = 1.5 ft, C2 = 3.0 ft, C3 = 6.0 ft, C4 = 12 ft, C5 = 24 ft, C6 = 50 ft, C7 = 75 ft, C8 = 100 ft ★ 

D Leadkit 



D1-D8 (8) Armored cable lead wire extensions with electrical plug: D1 = 1.5 ft, D2 = 3.0 ft, D3 = 6.0 ft, D4 = 12 ft, D5 = 24 ft, D6 = 50 ft, 

★ 

D7 = 75 ft, D8 = 100 ft 

L Leadkit 



L1-L8 Armored cable mating plugs with lead wire extension: L1 = 1.5 ft, L2 = 3.0 ft, L3 = 6.0 ft, L4 = 12 ft, L5 = 24 ft, L6 = 50 ft, 

★ 

L7 = 75 ft, L8 = 100 ft 

F Leadkit 



F1 4-pin bayonet connector ★ 

H Leadkit 



H1-H8 4-pin connector mating plugs with lead wire extension: H1 = 1.5 ft, H2 = 3.0 ft, H3 = 6.0 ft, H4 = 12 ft, H5 = 24 ft, H6 = 50 ft, 

★ 

H7 = 75 ft, H8 = 100 ft 

J Leadkit 



J1 Moisture-proof seal assembly for armored cables ★ 

15



00813-0100-2654, Rev GB 

April 2010 




Assemble to Options 



XA (9) Assemble connection head or transmitter to a sensor assembly ★ 

(1) Capsule style available in 1-in. increments only, starting at 1-in. (i.e. 1, 2, 3-inches, etc.) See “Mounting Adapters for Series 58, 68, 78, and 183” on page 66. 

(2) This option must be used with Sensor Lead Wire Termination code N and is not available with assembly code XA or with Approval codes E1, E5, E6, and E7. 

(3) General-purpose sensors are only available in (L) lengths of 2.5-in. or greater. 

(4) Spring loaded sensors must be installed in a thermowell assembly to meet the requirements of explosion-proof approvals code E6. 

(5) Not available with Sensor Lead Wire Termination codes R, P, or C or with approval codes E1, E5, E6, or E7. 

(6) 1-in. length without extension is only available in capsule style. 

(7) SAA Flame-proof Approval is only applicable if installed with Rosemount 248, 644, or 3144P transmitters. 

(8) These options are not available with Sensor Lead Wire Termination codes R, P, or W. 

(9) If ordering code XA with a transmitter, specify the same option on the transmitter model code. 

Ordering Example 

Typical 

Model 

Number 

Model 

Lead Wire 

Termination 

Sensor Type 

Extension 

Type 

Extension 

Length 

Thermowell 

Material 

Immersion 

Length 

Additional 

Options 

0068 N 11 N 00 N 045 E5 

16


00813-0100-2654, Rev GB 

April 2010 



TABLE 5. Series 68 RTD Sensor Assemblies WITH Thermowell 




0068 Platinum Temperature Sensors WITH Thermowell 







L Aluminum Connection Head, Six Terminals, extended Cover, Painted Y Y Y N ★ 





G Rosemount SST Connection Head with 1 /2-in. Entries Y Y Y Y 

Sensor Type (single element -50 to 400 °C (-58 to 752 °F)) 



11 General-purpose style ★ 

21 Spring-loaded style ★ 


31 (1)(2) Bayonet spring-loaded style (available in (X) lengths of 1 to 21-in., increments of 1-in.) 




A (3) Nipple Coupling ★ 

C (3) Nipple Union ★ 

N None ★ 




00 0.0 in. ★ 

30 3.0 in. ★ 

60 6.0 in. ★ 




A Type 316 SST (4) ★ 

B Type 304 SST ★ 

C Carbon Steel ★ 

D 316L SST ★ 

E 304L SST ★ 


F Alloy 20 

G Alloy 400 

H Alloy 600 

J Alloy C-276 

L 

Alloy B 

M 

304 SST with Teflon (PTFE) coating 

P 

Chrome Molybdenum F22 

R Nickel 200 

T 

Titanium 

U (5) 316 SST with Tantalum Sheath 

V 

310 SST 

W 

321 SST 

Z 


Sensor/Immersion Length (U (6) lenght in inches) (L) Lenght in inches (T (7) ) Lenght in inches 



015 1.5-in. 4.0-in. 1.0-in. ★ 

020 2.0-in. 4.0-in. 0.5-in. ★ 

025 2.5-in. 4.0-in. 0.0-in. ★ 

030 3.0-in. 6.0-in. 1.5-in. ★ 

035 3.5-in. 6.0-in. 1.0-in. ★ 

040 4.0-in. 6.0-in. 0.5-in. ★ 

FM 

ATEX 

CSA 

SAA 

17



00813-0100-2654, Rev GB 

April 2010 




045 4.5-in. 6.0-in. 0.0-in. ★ 

050 5.0-in. 9.0-in. 2.5-in. ★ 

055 5.5-in. 9.0-in. 2.0-in. ★ 

060 6.0-in. 9.0-in. 1.5-in. ★ 

065 6.5-in. 9.0-in. 1.0-in. ★ 

070 7.0-in. 9.0-in. 0.5-in. ★ 

075 7.5-in. 9.0-in. 0.0-in. ★ 

080 8.0-in. 12.0-in. 2.5-in. ★ 

085 8.5-in. 12.0-in. 2.0-in. ★ 

090 9.0-in. 12.0 1.5-in. ★ 

095 9.5-in. 12.0-in. 1.0-in. ★ 

100 10.0-in. 12.0-in. 0.5-in. ★ 

105 10.5-in. 12.0-in. 0.0-in. ★ 

110 11.0-in. 15.0-in. 2.5-in. ★ 

115 11.5-in. 15.0-in. 2.0-in. ★ 

120 12.0-in. 15.0-in. 1.5-in. ★ 

125 12.5-in. 15.0-in. 1.0-in. ★ 

130 13.0-in. 15.0-in. 0.5-in. ★ 

135 13.5-in. 15.0-in. 0.0-in. ★ 

140 14.0-in. 18.0-in. 2.5-in. ★ 

145 14.5-in. 18.0-in. 2.0-in. ★ 

150 15.0-in. 18.0-in. 1.5-in. ★ 

155 15.5-in. 18.0-in. 1.0-in. ★ 

160 16.0-in. 18.0-in. 0.5-in. ★ 

165 16.5-in. 18.0-in. 0.0-in. ★ 

170 17.0-in. 21.0-in. 2.5-in. ★ 

175 17.5-in. 21.0-in. 2.0-in. ★ 

180 18.0-in. 21.0-in. 1.5-in. ★ 

185 18.5-in. 21.0-in. 1.0-in. ★ 

190 19.0-in. 21.0-in. 0.5-in. ★ 

195 19.5-in. 21.0-in. 0.0-in. ★ 

200 20.0-in. 24.0-in. 2.5-in. ★ 

205 20.5-in. 24.0-in. 2.0-in. ★ 

210 21.0-in. 24.0-in. 1.5-in. ★ 

215 21.5-in. 24.0-in. 1.0-in. ★ 

220 22.0-in. 24.0-in. 0.5-in. ★ 

225 22.5-in. 24.0-in. 0.0-in. ★ 

230 23.0-in. 27.0-in. 2.5-in. ★ 

240 24.0-in. 27.0-in. 1.5-in. ★ 

250 25.0-in. 27.0-in. 0.5-in. ★ 

260 26.0-in. 30.0-in. 2.5-in. ★ 

270 27.0-in. 30.0-in. 1.5-in. ★ 

280 28.0-in. 30.0-in. 0.5-in. ★ 

290 29.0-in. 33.0-in. 2.5-in. ★ 

300 30.0-in. 33.0-in. 1.5-in. ★ 

310 31.0-in. 33.0-in. 0.5-in. ★ 

320 32.0-in. 36.0-in. 2.5-in. ★ 

330 33.0-in. 36.0-in. 1.5-in. ★ 

340 34.0-in. 36.0-in. 0.5-in. ★ 

350 35.0-in. 39.0-in. 2.5-in. ★ 

360 36.0-in. 39.0-in. 1.5-in. ★ 

370 37.0-in. 39.0-in. 0.5-in. ★ 

380 38.0-in. 42.0-in. 2.5-in. ★ 

390 39.0-in. 42.0-in. 1.5-in. ★ 

400 40.0-in. 42.0-in. 0.5-in. ★ 

410 41.0-in. 45.0-in. 2.5-in. ★ 

420 42.0-in. 45.0-in. 1.5-in. ★ 

18


00813-0100-2654, Rev GB 

April 2010 





430 43.0-in. 45.0-in. 0.5-in. ★ 

440 44.0-in. 48.0-in. 2.5-in. ★ 

450 45.0-in. 48.0-in. 1.5-in. ★ 

460 46.0-in. 48.0-in. 0.5-in. ★ 

470 47.0-in. 51.0-in. 2.5-in. ★ 

480 48.0-in. 51.0-in. 1.5-in. ★ 

Thermowell Style Mounting Stem 



T20 (4) Threaded 

1 /2-14 ANPT Stepped ★ 

T22 (4)(10) Threaded 


T24 (4)(10) Threaded 1-11.5 ANPT Stepped ★ 


3 /4-14 ANPT Tapered ★ 

T28 (10) Threaded 1-11.5 ANPT Tapered ★ 

T30 (10) Threaded 1 1 /2-11 ANPT Tapered ★ 


1 /2-14 ANPT Straight ★ 



T36 (10)(11) Threaded 1-11.5 ANPT Straight ★ 





W38 Welded 

3 /4-in. pipe Stepped ★ 

W40 Welded 1-in. pipe Stepped ★ 

W42 Welded 

3 /4-in. pipe Tapered ★ 

W44 Welded 1-in. pipe Tapered ★ 

W46 Welded 1 1 /4-in. pipe Tapered ★ 

W48 (10) Welded 

3 /4-in. pipe Straight ★ 

W50 (10) Welded 1-in. pipe Straight ★ 

F10 (10) Flanged 2-in., Class 150 Straight ★ 


F52 Flanged 1-in., Class 150 Stepped ★ 

F54 Flanged 1 1 /2-in., Class 150 Stepped ★ 


F58 Flanged 1-in., Class 150 Tapered ★ 

F60 Flanged 1 1 /2-in., Class 150 Tapered ★ 

F62 Flanged 2-in. Class 150 Tapered ★ 


F66 (10) Flanged 1 1 /2-in., Class 150 Straight ★ 










F88 (8) Flanged 1-in., Class 600 Stepped ★ 

F90 (8) Flanged 1 1 /2-in., Class 600 Stepped ★ 


F94 (8) Flanged 1-in., Class 600 Tapered ★ 

F96 (8) Flanged 1 1 /2-in., Class 600 Tapered ★ 


F02 (10)(8) Flanged 1-in., Class 600 Straight ★ 

F04 (10)(8) Flanged 1 1 /2-in., Class 600 Straight ★ 

F06 (10)(8) Flanged 2-in., Class 600 Straight ★ 




19



00813-0100-2654, Rev GB 

April 2010 





Q02 (9) Sanitary, Tri-Clamp 1-in., Tri-Clamp Stepped ★ 

Q04 (9) Sanitary, Tri-Clamp 1 1 /2-in., Tri-Clamp Stepped ★ 



Q20 (9) Sanitary, Tri-Clamp 

3 /4-in., Tri-Clamp Straight ★ 

Q22 (9) Sanitary, Tri-Clamp 1-in., Tri-Clamp Straight ★ 

Q24 (9) Sanitary, Tri-Clamp 1 1 /2-in., Tri-Clamp Straight ★ 



Options (Include with selected model number) 

Product Certifications 






Callendar-Van Dusen Constants 



V1-V7 V-Callendar-van Dusen Constants (V4 not available with series 68 sensors) ★ 




X8 Customer-Specified Temperature Calibration ★ 









M5-M7 Mounting adapter; Sensor Compression Fitting: M5= 1 /8-27 NPT, M6 = 1 /4-18 NPT, M7 = 1 /2-14 NPT ★ 

A Leadkit 




B Leadkit 




C Leadkit 




D Leadkit 


D1-D8 (1) 

L Leadkit 


L1-L8 

Armored cable lead wire extensions with electrical plug: D1 = 1.5 ft, D2 = 3.0 ft, D3 = 6.0 ft, D4 = 12 ft, D5 = 24 ft, D6 = 50 ft, 

D7 = 75 ft, D8 = 100 ft 

Armored cable mating plugs with lead wire extension: L1 = 1.5 ft, L2 = 3.0 ft, L3 = 6.0 ft, L4 = 12 ft, L5 = 24 ft, L6 = 50 ft, 

L7 = 75 ft, L8 = 100 ft 


★ 


★ 

F Leadkit 



F1 (1) 4-pin bayonet connector ★ 

H Leadkit 


H1-H8 

4-pin connector mating plugs with lead wire extension: H1 = 1.5 ft, H2 = 3.0 ft, H3 = 6.0 ft, H4 = 12 ft, H5 = 24 ft, H6 = 50 ft, 

H7 = 75 ft, H8 = 100 ft 


★ 

J Leadkit 




Special External Pressure Test 



R01 Special External Pressure Test ★ 

20


00813-0100-2654, Rev GB 

April 2010 





Material Certification 



Q8 Material Certification ★ 

Surface Finish Certification 



Q16 Surface Finish Certification ★ 

Dye Penetration Test 



R03 Dye Penetration Test ★ 

Thermowell Special Cleaning 



R04 Thermowell Special Cleaning ★ 

NACE Approval 



R05 NACE Approval ★ 

SST Plug and Chain 



R06 Stainless steel plug and chain ★ 

Full Penetration Weld 



R07 (11) Full penetration weld ★ 

Thermowell Concentric Serrations 



R09 (11)(12) Concentric serrations of thermowell flange face ★ 

Flat Faced Flange 



R10 (11)(12) Flat Faced Flange ★ 

Vent Hole 



R11 Vent Hole ★ 

Thermowell Xray 



R12 Thermowell Xray ★ 

Special Surface Finish 



R14 Special Surface Finish (12 Ra Maximum “U” lenght = 22.5-in.) ★ 

Ring Joint Flange 



R16 (11)(12) Ring joint flange (Not available with 0-in. (T) length) ★ 

Electropolish 



R20 Electropolish ★ 

Wake Frequrency 



R21 Wake Frequency-Thermowell Strength Calculation ★ 

Internal Pressure Test 



R22 Internal pressure test ★ 

Brass Plug & Chain 



R23 Brass plug & chain ★ 

Canadian Registration No. 


R24 CRN Marking for British Columbia 

R25 CRN Marking for Alberta 

R26 CRN Marking for Saskatchewan 

R27 CRN Marking for Manitoba 

R28 CRN Marking for Ontario 

R29 CRN Marking for Quebec 

R30 CRN Marking for New Brunswick 

R31 CRN Marking for Nova Scotia 

R32 CRN Marking for Prince Edward Island 

R33 CRN Marking for Yukon Territory 

R34 CRN Marking for Northwest Territory 

21





TABLE 6. Ordering Example 


00813-0100-2654, Rev GB 

April 2010 

R35 CRN Marking for Nunavut 

R36 CRN Marking for Newfoundland and Labrador 

Twell From Hex Stock 


R37 Thermowell from Hex stock 





(1) Not available with Sensor Lead Wire Termination codes R, P, or W. 

(2) Not available with option codes E1, E5, E6, and E7. 

(3) Codes A and C must be used with an extension length. Additional non-standard (E) lengths are available in 1 /2-in. increments from 2.5 to 9-in. 

(4) Standard configuration with best delivery. 

(5) Available only with straight stem thermowells. 

(6) Thermowells with an overall length (“U” + “T” + 1.75-in.) of 36-in. or less are machined from solid barstock. Thermowells with an overall length larger than 42-in. will be constructed 

using a welded 3-piece design and are available only with a stepped stem style. 

(7) For additional (T) lengths, see Table 28 on page Temperature-71. 

(8) F88 to F08 cannot be used with 0-in. (T) length. F08 cannot be used with 0- or 1 /2-in. (T) length) 

(9) Limited to 24” immersion length and 316 or 304 SST materials only. 

(10) SAA flame-proof approval is only applicable if installed with a Rosemount 248, 644, or 3144P transmitter. 

(11) Available on flanged thermowells only. 

(12) Only one flange face option allowed. 

(13) If ordering option code XA with a transmitter, specify the same option on the transmitter model code. 

Typical 

Model 

Number 

Lead Wire 

Extension Extension 

Immersion Mounting Additional 

Model Termination Sensor Type Type Length Material Code Length Style Options 

0068 N 21 A 30 A 075 T22 E5 

22


00813-0100-2654, Rev GB 

April 2010 

SERIES 78 PLATINUM RTD 

Series 78 sensors are intended for applications that require high 

accuracy, dual-elements, and/or are subjected to high 

temperatures. Rosemount Series 78 Platinum Resistance 

temperature sensors measure from –200 to 600 °C (–328 to 1112 

°F). These sensors are available in capsule, general-purpose, 

spring-loaded, and bayonet spring-loaded designs in sensor (X) 

lengths from 1 to 68 inches. 

Table 7 shows the interchangeability of the Series 78 Pt100-385 

sensors. The performance of the standard Series 78 sensor 

conforms to the standard set by IEC 751 Class B. Additionally, 

IEC-751 Class A accuracy is available as an option. For maximum 

system accuracy, Rosemount Inc. can provide sensor calibration. 

See Sensor Characterization (Calibration) Schedules– Option 

Code V. Rosemount Inc. also offers optional sensor-to-transmitter 

matching capability obtainable through the use of Callendar-Van 

Dusen Constants. See Option Code “V” Callendar-van Dusen 

Constantsand Option X8Q4: Sensor Calibrated to a 

Customer-Specified Temperature Range. 

The wire-wound design and construction of the General-Purpose 

Series 78 sensor allows direct immersion in non-corrosive fluids at 

reasonable static pressures. For corrosive environments and in 

many industrial applications, these sensors are commonly used 

with standard thermowell assemblies. 


Single-element high-temperature sensors have four lead wires 

and may be used in 2-, 3-, and 4-wire signal conditioning systems. 

Dual-element sensors have redundant elements to provide 

separate readout and control signals from a single measurement 

point. Dual-element sensors have three lead wires for each 

element and may be used with 2- or 3-wire systems. Dual-element 

sensors can also be wired to be used as compensation loop 

sensors (see Figure 8). 


FIGURE 8. Wiring Configuration of a 

Dual-Element Sensor to Function as a Single 

Element Sensor with a Compensation Loop 

Construction 

Single Element Dual-element (1) 

Red 

Red 

White 

White 

(1) Dual-element sensors are only available on Series 68Q and 78 sensors. 

FIGURE 9. Construction of a Platinum Wire-wound RTD 

Lead Wires 

Seal 

High Purity Insulator 

Platinum Resistance 

Element 

White 

White 

Red 

Green 

Green 

Black 

23



Environmental 


00813-0100-2654, Rev GB 

April 2010 

Performance 


Series 78 single- and dual-element sensors may be used in 

temperatures from –200 to 500 °C (–328 to 932 °F). Series 78 

single-element high-temperature sensors are provided for 

high-temperature service over the range of 0 to 600 °C (32 to 1112 

°F). 

Effect of Temperature Cycling 

±0.04% (0.10 °C or 0.18 °F) maximum ice-point resistance shift 

following 10 cycles between –200 and 500 °C (–328 to 932 °F). 

Stability 


at 400 °C (752 °F). 

Accuracy 

TABLE 7. Series 78 Interchangeability 

Standard Series 78 IEC-751 Class B 

Temperature 

±0.80 °C (±1.44 °F) -100 °C (-148 °F) 

±0.30 °C (±0.54 °F) 0 °C (32 °F) 

±0.80 °C (±1.44 °F) 100 °C (212 °F) 

±1.80 °C (±3.24 °F) 300 °C (572 °F) 

±2.30 °C (±4.14 °F) 400 °C (752 °F) 

Series 78 with IEC-751 Class A Option Temperature 

±0.35 °C (±0.63 °F) -100 °C (-148 °F) 

±0.15 °C (±0.27 °F) 0 °C (32 °F) 

±0.35 °C (±0.63 °F) 100 °C (212 °F) 

±0.75 °C (±1.35 °F) 300 °C (572 °F) 

±0.95 °C (±1.71 °F) 400 °C (752 °F) 


• Single- and dual-element, Nominal R0 100 Ohm Nominal 

alpha .00385 / C. 

• Single-element, high temperature: ±0.1% of range. 

Time Constant 

4 seconds maximum required to reach 63.2% sensor response in 

water flowing at 3 ft/s (0.91 m/s), 9.5 seconds for single-element 

high-temperature sensors. 

Self Heating 

18 mW minimum power dissipation required to cause a 1 °C (1.8 

°F) temperature measurement error in water flowing at 3 ft/s, 25 

mW for single-element high temperature sensors. 


Lead seal is capable of withstanding 100% 

relative humidity. 

Vibration Limits 

Standard single- and dual-element sensors: 

• ±0.03% maximum ice-point resistance shift due to 30 minutes 

of 21 g peak vibration from 5 to 350 Hz continuous sweep at 

20 °C (68 °F) for unsupported stem length of less than 5.5 

inches (140 mm). 

Single-element high-temperature sensors: 

• Meet ASTM E 1137-95. Cycling time is 3 hours per 

longitudinal axis, less the time spent at resonant dwells at the 

axis, from 5 to 500 Hz. The test level is 1.27 mm (0.05 in.) 

double amplitude displacement or peak g-level of 3, whichever 

is less. 


Each sensor is subjected to a resistance accuracy test at 0 °C and 

an insulation resistance test. 


When installed properly, Rosemount Series 78 sensors are 


Type 4X installations. See Hazardous Area Approvals for 

complete installation information. 



316 SST 

Lead Wires 

PTFE-insulated, nickel-coated, 22-gauge stranded copper wire. 


The model and serial numbers and up to six lines of permanent 



Weight 

• Capsule sensors: 5 oz 

General purpose and spring-loaded sensors: 9 oz 


500 10 6 ohms minimum insulation resistance when measured at 

500 V dc at room temperature [20 °C (68 °F)]. Single element 

high-temperature sensors are measured at 100V dc. 

24


00813-0100-2654, Rev GB 

April 2010 


Ordering Information 





0078 Platinum Temperature Sensor WITHOUT Thermowell 








N Sensor only with 6-in. PTFE-insulated, 22-gauge lead wires Y Y Y N ★ 

D Rosemount Aluminum Connection head Y Y Y Y ★ 



G Rosemount SST Connection Head with 1/2 in. Entries Y Y Y Y 

Sensor Type 

Range 

Single Element Temperature Sensors 

-200 to 500 °C (-328 to 932 °F) 



01 (1)(2) Capsule style ★ 



FM 

ATEX 

CSA 

SAA 


31 (4) Bayonet spring-loaded style (available in (X) lengths of 1 to 21-in, increments of 1-in.) 

Single Element High Temperature Sensors 

0 to 600 °C (32 to 1112 °F) 



03 (1) Capsule style (available in (X) lengths of 3 to 48-in, increments of 1-in.) ★ 

13 General-purpose style (available in (X) lengths of 3 to 48-in, increments of 1 /2-in.) ★ 

23 (3) Spring-loaded style (available in (X) lengths of 3 to 48-in, increments of 1 /2-in.) ★ 



Dual-element Temperature Sensors 

-200 to 500 °C (-328 to 932 °F) 



05 (1) Capsule style ★ 






Material 



A (5) Nipple Coupling SST ★ 

C (5) Nipple Union SST ★ 

N None (Use with extension length option code 00) ★ 




00 0.0 in. ★ 

30 3.0 in. ★ 

60 6.0 in. ★ 





Sensor/ Immersion Length (U length in inches) 



010 1.0-in. ★ 

015 1.5-in. ★ 

020 2.0-in. ★ 

025 2.5-in. ★ 

030 3.0-in. ★ 

035 3.5-in. ★ 

25



00813-0100-2654, Rev GB 

April 2010 




040 4.0-in. ★ 

045 4.5-in. ★ 

050 5.0-in. ★ 

055 5.5-in. ★ 

060 6.0-in. ★ 

065 6.5-in. ★ 

070 7.0-in. ★ 

075 7.5-in. ★ 

080 8.0-in. ★ 

085 8.5-in. ★ 

090 9.0-in. ★ 

095 9.5-in. ★ 

100 10.0-in. ★ 

105 10.5-in. ★ 

110 11.0-in. ★ 

115 11.5-in. ★ 

120 12.0-in. ★ 

125 12.5-in. ★ 

130 13.0-in. ★ 

135 13.5-in. ★ 

140 14.0-in. ★ 

145 14.5-in. ★ 

150 15.0-in. ★ 

155 15.5-in. ★ 

160 16.0-in. ★ 

165 16.5-in. ★ 

170 17.0-in. ★ 

175 17.5-in. ★ 

180 18.0-in. ★ 

185 18.5-in. ★ 

190 19.0-in. ★ 

195 19.5-in. ★ 

200 20.0-in. ★ 

205 20.5-in. ★ 

210 21.0-in. ★ 

215 21.5-in. ★ 

220 22.0-in. ★ 

225 22.5-in. ★ 

230 23.0-in. ★ 

235 23.5-in. ★ 

240 24.0-in. ★ 

245 24.5-in. ★ 

250 25.0-in. ★ 

260 26.0-in. ★ 

270 27.0-in. ★ 

280 28.0-in. ★ 

290 29.0-in. ★ 

300 30.0-in. ★ 

310 31.0-in. ★ 

320 32.0-in. ★ 

330 33.0-in. ★ 

340 34.0-in. ★ 

350 35.0-in. ★ 

360 36.0-in. ★ 

370 37.0-in. ★ 

380 38.0-in. ★ 

390 39.0-in. ★ 

400 40.0-in. ★ 

26


00813-0100-2654, Rev GB 

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410 41.0-in. ★ 

420 42.0-in. ★ 

430 43.0-in. ★ 

440 44.0-in. ★ 

450 45.0-in. ★ 

460 46.0-in. ★ 

470 47.0-in. ★ 

480 (6) 48.0-in. ★ 


Sensor 


A (7) IEC – 751 Class A Sensor 










V1-V7 V-Callendar-van Dusen Constants ★ 














A Leadkit 




B Leadkit 




C Leadkit 




D Leadkit 




★ 

D7 = 75 ft, D8 = 100 ft 

L Leadkit 




★ 

L7 = 75 ft, L8 = 100 ft 

F Leadkit 




H Leadkit 



H1-H8 4-pin connector mating plugs with lead wire extension: H1 = 1.5 ft, H2 = 3.0 ft, H3 = 6.0 ft, H4 = 12 ft, H5 = 24 ft, H6 = 50 ft, 

★ 

H7 = 75 ft, H8 = 100 ft 

J Leadkit 







XA (10) Assemble connection head or transmitter to a sensor assembly (PTFE paste where appropriate, fully wired.) ★ 

27



00813-0100-2654, Rev GB 

April 2010 

(1) Capsule style available in 1-in. increments only. See “Mounting Adapters for Series 58, 68, 78, and 183” on page Temperature-66. 

(2) Must be used with Sensor Lead Wire Termination code N and is not available with assembly option XA or with approval option codes E1, E5, E6, or E7. 

(3) Spring loaded sensors must be installed in a thermowell assembly to meet the requirements of explosion-proof approval option code E6. 

(4) This option is not available with Sensor Lead Wire Termination codes R, P or C or approval code E1, E6, and E7. 


(6) Additional lengths are available up to 68-in., increments of 1-in. 

(7) The IEC 751 Class A option is not available with high-temperature sensors. 

(8) SAA Flameproof approvals only applicable if installed with a Rosemount 248, 644, or 3144P transmitter. 

(9) Requires Sensor lead wire termination code N 



Typical 

Model 

Number 

Lead Wire 

Extension Extension Thermowell Immersion Additional 

Model Termination Sensor Type Type 

Length Material Length Options 

0078 N 21 N 00 N 045 E5 

28


00813-0100-2654, Rev GB 

April 2010 







0078 Platinum Temperature Sensor WITH Thermowell 

FM 

ATEX 

CSA 

SAA 








D Rosemount Aluminum Connection head with 1 /2- in. Entries Y Y Y Y ★ 



G Rosemount SST Connection Head with 1 /2- in. Entries Y Y Y Y 

Sensor Type 



Single Element Temperature Sensors 

-200 to 500 °C (-328 to 932 °F) 






31 (1)(2) Bayonet spring-loaded style (available in (X) lengths over 21-in.) 

Single Element High Temperature Sensors 

0 to 500 °C (32 to 1112 °F) 



13 General-purpose style (available in (X) lengths of 3 to 24-in., increments of 1 /2-in.) ★ 

23 Spring-loaded style (available in (X) lengths of 3 to 24-in., increments of 1 /2-in.) ★ 



Dual-element Temperature Sensors 

-200 to 500 °C (-328 to 932 °F) 








Material 









00 0.0 in. ★ 

30 3.0 in. ★ 

60 6.0 in. ★ 




A Type 316 SST (4) ★ 



D 316L SST ★ 

E 304L SST ★ 


F Alloy 20 

G Alloy 400 

H Alloy 600 

J Alloy C-276 

L 

Alloy B 

M 


P 


R Nickel 200 

T 

Titanium 


29



00813-0100-2654, Rev GB 

April 2010 




V 

310 SST 

W 

321 SST 

Z 


Sensor/Immersion Length (U) length in inches) (L) Length in inches (T) Length in inches 



015 (6) 1.5-in. 4.0-in. 1.0-in. ★ 

020 (6) 2.0-in. 4.0-in. 0.5-in. ★ 

025 (6) 2.5-in. 4.0-in. 0.0-in. ★ 

030 3.0-in. 6.0-in. 1.5-in. ★ 

035 3.5-in. 6.0-in. 1.0-in. ★ 

040 4.0-in. 6.0-in. 0.5-in. ★ 

045 4.5-in. 6.0-in. 0.0-in. ★ 

050 5.0-in. 9.0-in. 2.5-in. ★ 

055 5.5-in. 9.0-in. 2.0-in. ★ 

060 6.0-in. 9.0-in. 1.5-in. ★ 

065 6.5-in. 9.0-in. 1.0-in. ★ 

070 7.0-in. 9.0-in. 0.5-in. ★ 

075 7.5-in. 9.0-in. 0.0-in. ★ 

080 8.0-in. 12.0-in. 2.5-in. ★ 

085 8.5-in. 12.0-in. 2.0-in. ★ 

090 9.0-in. 12.0-in. 1.5-in. ★ 

095 9.5-in. 12.0-in. 1.0-in. ★ 

100 10.0-in. 12.0-in. 0.5-in. ★ 

105 10.5-in. 12.0-in. 0.0-in. ★ 

110 11.0-in. 15.0-in. 2.5-in. ★ 

115 11.5-in. 15.0-in. 2.0-in. ★ 

120 12.0-in. 15.0-in. 1.5-in. ★ 

125 12.5-in. 15.0-in. 1.0-in. ★ 

130 13.0-in. 15.0-in. 0.5-in. ★ 

135 13.5-in. 15.0-in. 0.0-in. ★ 

140 14.0-in. 18.0-in. 2.5-in. ★ 

145 14.5-in. 18.0-in. 2.0-in. ★ 

150 15.0-in. 18.0-in. 1.5-in. ★ 

155 15.5-in. 18.0-in. 1.0-in. ★ 

160 16.0-in. 18.0-in. 0.5-in. ★ 

165 16.5-in. 18.0-in. 0.0-in. ★ 

170 17.0-in. 21.0-in. 2.5-in. ★ 

175 17.5-in. 21.0-in. 2.0-in. ★ 

180 18.0-in. 21.0-in. 1.5-in. ★ 

185 18.5-in. 21.0-in. 1.0-in. ★ 

190 19.0-in. 21.0-in. 0.5-in. ★ 

195 19.5-in. 21.0-in. 0.0-in. ★ 

200 20.0-in. 24.0-in. 2.5-in. ★ 

205 20.5-in. 24.0-in. 2.0-in. ★ 

210 21.0-in. 24.0-in. 1.5-in. ★ 

215 21.5-in. 24.0-in. 1.0-in. ★ 

220 22.0-in. 24.0-in. 0.5-in. ★ 

225 22.5-in. 24.0-in. 0.0-in. ★ 

230 23.0-in. 27.0-in. 2.5-in. ★ 

240 24.0-in. 27.0-in. 1.5-in. ★ 

250 25.0-in. 27.0-in. 0.5-in. ★ 

260 26.0-in. 30.0-in. 2.5-in. ★ 

270 27.0-in. 30.0-in. 1.5-in. ★ 

280 28.0-in. 30.0-in. 0.5-in. ★ 

290 29.0-in. 33.0-in. 2.5-in. ★ 

300 30.0-in. 33.0-in. 1.5-in. ★ 

310 31.0-in. 33.0-in. 0.5-in. ★ 

320 32.0-in. 36.0-in. 2.5-in. ★ 

330 33.0-in. 36.0-in. 1.5-in. ★ 

340 34.0-in. 36.0-in. 0.5-in. ★ 

30


00813-0100-2654, Rev GB 

April 2010 





350 35.0-in. 39.0-in. 2.5-in. ★ 

360 36.0-in. 39.0-in. 1.5-in. ★ 

370 37.0-in. 39.0-in. 0.5-in. ★ 

380 38.0-in. 42.0-in. 2.5-in. ★ 

390 39.0-in. 42.0-in. 1.5-in. ★ 

400 40.0-in. 42.0-in. 0.5-in. ★ 

410 41.0-in. 45.0-in. 2.5-in. ★ 

420 42.0-in. 45.0-in. 1.5-in. ★ 

430 43.0-in. 45.0-in. 0.5-in. ★ 

440 44.0-in. 48.0-in. 2.5-in. ★ 

450 45.0-in. 48.0-in. 1.5-in. ★ 

460 46.0-in. 48.0-in. 0.5-in. ★ 

470 47.0-in. 51.0-in. 2.5-in. ★ 

480 48.0-in. 51.0-in. 1.5-in. ★ 




T20 (4) 

1 

Threaded 

/2-14 ANPT Stepped ★ 



T24 (4) Threaded 1-11.5 ANPT Stepped ★ 

T26 Threaded 


T28 Threaded 1-11.5 ANPT Tapered ★ 

T30 Threaded 1 1 /2-11 ANPT Tapered ★ 

T32 Threaded 


T34 Threaded 


T36 Threaded 1-11.5 ANPT Straight ★ 

T38 Threaded 


T44 Threaded 


W38 Welded 



W42 Welded 




W48 Welded 


W50 Welded 1-in. pipe Straight ★ 

F10 Flanged 2-in., Class 150 Straight ★ 









F66 Flanged 1 1 /2-in., Class 150 Straight ★ 
















31



00813-0100-2654, Rev GB 

April 2010 












Q04 (8) Sanitary, Tri-Clamp 1 1 /2-in., Tri-Clamp Stepped ★ 










Sensor 


A (9) IEC 751 Class A sensor 







Callendar-Van Dusen Constant 



V1-V7 V-Callendar-van Dusen Constants ★ 














A Leadkit 




B Leadkit 




C Leadkit 




D Leadkit 




★ 

D7 = 75 ft, D8 = 100 ft 

L Leadkit 




★ 

L7 = 75 ft, L8 = 100 ft 

F Leadkit 




H Leadkit 



H1-H8 4-pin connector mating plugs with lead wire extension: H1 = 1.5 ft, H2 = 3.0 ft, H3 = 6.0 ft, H4 = 12 ft, H5 = 24 ft, H6 = 50 ft, ★ 

32


00813-0100-2654, Rev GB 

April 2010 





J Leadkit 








Material Certifications 



Q8 Thermowell material certificate ★ 













NACE Approval 







R06 SST Plug and Chain ★ 




R07 (12) Full Penetration Weld ★ 

Themowell Concentric Serrations 



R09 (12)(13) Concentric Serrations of Thermowell Flange Face ★ 





Vent Hole 











R14 Special Surface Finish (12 RA Maximum “U” length = 22.5-in.) ★ 




R16 (12)(13) Ring Joint Flange (not available with 0-in. (T) length) ★ 

Electropolish 




Wake Frequency 



R21 Wake Frequency - Thermowell Strength Calculation ★ 




R22 Internal Pressure Test ★ 




R23 Brass Plug & Chain ★ 









33







00813-0100-2654, Rev GB 

April 2010 










R37 Thermowell From Hex Stock 

Assemble to Option 



XA (2)(14) Assemble connection head or transmitter to a sensor assembly (PTFE paste where appropriate, fully wired.) ★ 

(1) Not available with Sensor Lead Wire Termination codes R, P or W. 

(2) Not available with Approval codes E1, E6, or E7. 



(5) Available only with straight stem flanged thermowells. 

(6) Straight or Tapered stem only. 

(7) F88 to F08 cannot be used with 0-in. (T) length. F08 cannot be used with 0- or 1 /2-in. (T) length 


(9) The IEC 751 Class A option is not available with high-temperature sensors. 

(10) SAA Flameproof approvals only applicable if installed with a Rosemount 248, 644, or 3144 transmitter. 

(11) These options are not available with Sensor Lead Wire Termination codes R, P, or W. 




Typical 

Model 

Number 

Lead Wire 

Extension Extension 

Immersion Mounting Additional 

Model Termination Sensor Type Type Length Material Code Length Style Options 

0078 N 21 A 30 A 075 T22 E5 

34


00813-0100-2654, Rev GB 

April 2010 

SERIES 68Q SANITARY PLATINUM RTD 

Rosemount Series 68Q sanitary RTD temperature sensors 

measure from –50 to 200 °C (–58 to 392 °F). Series 68Q sensors 

are available in Tri-Clamp ® endcap designs in immersion lengths 

from 1.0 to 9.5 inches. Table 12 shows the interchangeability of 

the Series 68Q sensor. 

Accuracy 

TABLE 12. Series 68Q Interchangeability (IEC 751 Class B) 

±0.55 °C (±0.99 °F) at –50 °C (–58 °F) 

±0.30 °C (±0.54 °F) at 0 °C (32 °F) 

±0.80 °C (±1.44 °F) at 100 °C (212 °F) 

±1.30 °C (±2.34 °F) at 200 °C (392 °F) 

Construction 

Series 68Q sensors conform to 3-A Sanitary Standards and 

feature product contact surfaces designed for CIP cleaning. The 

response times of Series 68Q sensors meet the 

Grade A Pasteurized Milk Ordinance (PMO) specification for 

thermometric response of an indicating thermometer on a pipeline. 

Series 68Q sensors are offered in a Tri-Clamp sanitary endcap 

configuration. The sensor capsule is welded into the 316 SST 

sanitary endcap/stem assembly. The product contact of this 

assembly is polished to a finish that exceeds No. 4 minimum finish 

as required by the 3–A Sanitary Council Standard #74-02. 


Single-element temperature sensors have four lead wires and may 

be used in 2-, 3-, and 4-wire signal conditioning systems. 

Dual-element sensors have six lead wires and may be used in 2- 

and 3-wire signal conditioning systems. 


Response Time 

Tri-clamp O.D. Tube Size 1-in. and greater 

Less than 3.5 seconds required to reach 63.2% sensor 

response in water flowing at 3 ft/s (0.91 m/s). Meets PMO 

specification 

Tri-clamp O.D. Tube Size 1 /2 - 3 /4-in.: 

Less than 1.5 seconds required to reach 63.2% sensor 

response in water flowing at 3 ft/s (0.91 m/s). 



100 V dc at room temperature 

Surface Finish 

32R A standard finish on product contact surfaces. Meets 3-A 

requirements 

15R A high mechanical polish available with option code HP. 

Environmental 


Lead seal is capable of withstanding 100% relative humidity 


Each sensor is subjected to a resistance accuracy test at 0 °C 



316 SST 

SPECIFICATIONS 

Performance 


–50 to 200 °C (–58 to 392 °F) 


±0.09% of operating temperature range 

Stability 

Tri-clamp O.D. Tube Size 1-in. and greater: 

±0.04% maximum ice-point resistance shift following 1,000 

hours at maximum specified temperature 392 °F (200 °C). 

Tri-clamp O.D. Tube Size 1 /2 - 3 /4-in.: 

±0.08% maximum ice-point resistance shift following 1,000 

hours at maximum specified temperature 392 °F (200 °C). 

Lead Wire 

PTFE-insulated, nickel-coated, 24-gauge stranded copper wire 




tags are available upon request 

Weight 

0.6 to 2.0 lb (0.3 to 0.9 kg) 

35



00813-0100-2654, Rev GB 

April 2010 

Dimensional Drawings 

0.84 (21) 

FIGURE 10. 68Q Sanitary Sensor and Polypropylene Connection Head Dimensional Drawings 

3.00 (76) 

Tri-Clamp 

Endcap 

STEPPED STEM 

Stem 

U 

68Q Sanitary Sensor with Tri-Clamp ® Endcap 

STRAIGHT STEM 

Tri-Clamp Process Connection 

1.5 (6.35) 

1 to 3 inch O.D.tube size 

1 

0.250 

/2-in NPT 

0.5 (13) 

(6.35) 

0.250 (6.35) 

½–14 ANPT 

R 0.250 (6.35) 

R 0.250 (6.35) 

0.825 (20.96) 

3.00 (76.2) 

U 

68Q Mini General Purpose Sensor with Cable and Strain Relief 

Vinyl Strain Relief 

0.375 

(9.5) 


1 /2 to 

3 /4 inch O.D. tube size 

Lead Wire Length 2.2 (55.9) 0.25 (6.4) 

0.125 

(3.2) 

U 

68Q Mini General Purpose Sensor with 1 /2-in. NPT Threaded Adapter 

1 /2-in. NPT / 

1 /2-in. NPSM 

0.188 

1 /2-in. NPT / 

1 /2-in. 

0.405 (10.3) 


1 /2 to 

3 /4 inch O.D. tube size 

6 (152.4) 

2.2 (55.9) 0.25 (6.4) 

U 

0.125 (3.2) 

68Q Mini Spring Loaded Sensor with Thermowell and Replaceable Sensor 

(4.8) 

6 (152.4) 

±1.0 

2.2 (55.9) ±1.25 U 


TABLE 13. Series 68Q Spare Parts List 

Mini Spring-Loaded Sanitary Replacement Sensors and Thermowells 

Immersion Length (U) Replacement Sensor Part Number Replacement Thermowell Part Number 

2.0 00068-4035-0020 00068-4035-1020 

2.5 00068-4035-0025 00068-4035-1025 

3.0 00068-4035-0030 00068-4035-1030 

36


00813-0100-2654, Rev GB 

April 2010 



TABLE 14. Series 68Q Sanitary Platinum RTD Sensor Assemblies 



Model Product Description 

0068Q Sanitary Platinum RTD Sensor Assembly 




P Aluminum Connection Head, Six Terminals, Flat Cover, Painted ★ 

L Aluminum Connection Head, Six Terminals, Extended Cover, Painted ★ 

N Sensor only ★ 

D Rosemount Aluminum Connection Head with 1 /2-in. Entries ★ 


C 


G 

Rosemount SST Connection Head with 1 /2-in. Entries 

Sensor Type 




11 Single Stepped Stem -50 to 200 °C (-58 to 392 °F) ★ 

15 Dual Stepped Stem -50 to 200 °C (-58 to 392 °F) ★ 

21 Single Straight Stem -50 to 200 °C (-58 to 392 °F) ★ 

25 Dual Straight Stem -50 to 200 °C (-58 to 392 °F) ★ 

30 (1) (2) Mini General Purpose 6-in. lead with 1 /2-in. NPT Threaded Adapter -50 to 200 °C (-58 to 392 °F) ★ 

31 (1)(2)(3) Mini General Purpose 6-in. lead with 1 /2-in. NPSM Threaded Adapter -50 to 200 °C (-58 to 392 °F) ★ 

32 (1)(2)(3) Mini General Purpose 180-in. cable with strain relief -50 to 200 °C (-58 to 392 °F) ★ 

33 (1)(2)(3) Mini General Purpose 300-in. cable with strain relief -50 to 200 °C (-58 to 392 °F) ★ 

41 (4) Mini Spring Loaded with thermowell replacement sensor -50 to 200 °C (-58 to 392 °F) ★ 

Sensor Immersion Length (L) (inches 



U010 1.00 in. ★ 

U011 1.10 in. ★ 

U012 1.20 in. ★ 

U013 1.25 in. ★ 

U014 1.40 in. ★ 

U015 1.50 in. ★ 

U016 1.60 in. ★ 

U017 1.70 in. ★ 

U018 1.80 in. ★ 

U019 1.90 in. ★ 

U020 2.00 in. ★ 

U025 2.50 in. ★ 

U030 3.00 in. ★ 

U035 3.50 in. ★ 

U040 (5) 4.00 in. ★ 

U045 4.50 in. ★ 

U050 (5) 5.00 in. ★ 

U055 5.50 in. ★ 

U060 6.00 in. ★ 

U065 6.50 in. ★ 

U070 7.00 in. ★ 

U075 7.50 in. ★ 

U080 8.00 in. ★ 

U085 8.50 in. ★ 

U090 9.00 in. ★ 

U095 9.50 in. ★ 

Endcap Type 

O.D. Tube Size (inches) 



L050 (6) Tri-Clamp 

1 /2 to 

3 /4 in. ★ 

L100 Tri-Clamp 1.00 in. ★ 

L150 (5) Tri-Clamp 1.50 in. ★ 

37



00813-0100-2654, Rev GB 

April 2010 

TABLE 14. Series 68Q Sanitary Platinum RTD Sensor Assemblies 



L200 (5) Tri-Clamp 2.00 in. ★ 







V1-V7 V-Callendar-van Dusen Constants (V3, V4, V6 not available with 68Q) ★ 










Special Surface Finish Electro Polish 



R20 (7) Electropolishing of wetted surfaces ★ 

Special Surface Finish High Mechanical Polish 



HP High Mechanical Polish, 15R a or better ★ 

Thermowell Material Certification 











XA (8) Assemble connection head or transmitter to a sensor assembly (PTFE paste where appropriate, fully wired.) ★ 

(1) Only available in immersion lengths between 1-in. and 2-in. 

(2) Only available with Tri-Clamp O.D. tube size 1 /2 to 3 /4-in. (Endcap type code L050). 

(3) Only available with Sensor lead Wire Termination code N (sensor only). 

(4) Only available in U lengths of 2.0, 2.5, or 3.0 inches. 


(6) Only available in sensor type code 30, 31, 32, 33 

(7) If ordering a Mini General Purpose or Mini Spring Loaded Sensor (Sensor Type codes 30, 31, 32, 33, or 41) with Electropolishing, High Mechanical Polish (Option code HP) is also 

required. 



Typical 

Model 

Number 

Model Lead Wire Termination Sensor Type Immersion Length Endcap Type, Tube Size Additional Options 

0068Q N 11 U050 L150 V2 

38


00813-0100-2654, Rev GB 

April 2010 


SERIES 58C PLATINUM RTD 

Rosemount Series 58C sensors are available in 

12-, 24-, 36-, and 48-inch (X) lengths and may be shortened to any 

desired length with an ordinary tubing cutter. This cut-to-fit feature 

eliminates the need to stock a large selection of sensors in many 

specific lengths. Table 15 shows the interchangeability of the 

Series 58C Sensor. 

TABLE 15. Series 58C Interchangeability (IEC 751 Class B) 

±0.55 °C (±0.99 °F) at –50 °C (–58 °F) 

±0.30 °C (±0.54 °F) at 0 °C (32 °F) 

±0.80 °C (±1.44 °F) at 100 °C (212 °F) 

±1.30 °C (±2.34 °F) at 200 °C (392 °F) 


Performance Specifications 


–50 to 200 °C (–58 to 392 °F) 


±0.09% of operating temperature range. 

Stability 


at maximum specified temperature (200 °C). 



50 V dc at room temperature. 

Environmental Specifications 


No permanent rear seal is installed 


Each sensor is subjected to a resistance accuracy test at 0 °C and 

an insulation resistance test 



316 SST 

Lead Wires 

PTFE-insulated, nickel-coated, 24-gauge stranded copper wire 

Dimensional Drawings 

Series 58C Sensor 

Do not cut all the way through the sensor sheath when cutting the sensor to length. Damage to the sensor wires could result. To prevent damage to the sensor 

wires, score the sheath considerably with a tubing cutter and gently break off the excess. 

4 Lead Wires 6 (152) Long 

X Length ±0.25 (±6) 

0.25 ±0.002 (6.35 ±0.13) Diameter 

Nylon Sleeve 

0.6 (15) Max. Sensing Element 

Do Not Cut or Bend Sheath within 2 (51) 

Option Code SNN Spring-Loaded Fitting 

303 SST. 1 /2–14 ANPT 

Option Codes C01, C02, Swagelok Compression Fitting 

316 SST. 1 /2–14 ANPT 

for 0.25 (6) 

Diameter Sensors 

for 0.25 (6) 

Diameter Sensors 

2.51 

(64) Max. 

1.75 

(44) Max. 


39



00813-0100-2654, Rev GB 

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TABLE 16. Series 58C Cut-to-Fit RTD Sensors 



Model 

Product Description 

0058C Platinum Resistance Temperature Sensor 




D Rosemount Aluminum Connection Head with 1 /2-in. Entries ★ 

R Aluminum Connection Head, Six Terminals, Flat Cover, Unpainted ★ 

T Aluminum Connection Head, Six Terminals, Extended Cover, Unpainted ★ 

P Aluminum Connection Head, Six Terminals, Flat Cover, Painted ★ 

L Aluminum Connection Head, Six Terminals, Extended Cover, Painted ★ 

N Sensor only with 6-in. Teflon ® -insulated, 22-gauge lead wires ★ 


C 


G 

Rosemount SST Connection with 1 /2-in. Entries 

Sensor Immersion Length 



1200 12 in. ★ 

2400 24 in. ★ 

3600 36 in. ★ 

4800 48 in. ★ 

Mounting Adapter 



NNN None ★ 

C01 (1) One-compression fitting 1 /2–14 ANPT ★ 

C02 (1) Two-compression fittings 1 /2–14 ANPT ★ 

SNN Spring-loaded fitting 1 /2–14 ANPT ★ 

(1) The only difference between C01 and C02 is that the C01 includes one fitting while the C02 option includes two fittings. 


Typical Model 

Number 

Model 

Lead Wire 

Termination 

Sensor Length 

Mounting 

Adapter 

0058C R 1200 SNN 

TABLE 17. Series 58C Spare Parts List 

(specify spare part number separately when ordering mounting 

adapters) 

Mounting Adapters Option Code Spare Part Number 

Compression fitting 1 /2–14 ANPT C01 and C02 C07961-0008 

Spring loaded fitting 1 /2–14 ANPT SNN 00058-0010-0001 

40


00813-0100-2654, Rev GB 

April 2010 


SERIES 183 THERMOCOUPLE 

Rosemount Series 183 Thermocouple sensors measure from 

–180 to 1150 °C (–292 to 2102 °F). 

Construction 

The Series 183 Thermocouples are manufactured using ISA Type 

J, K, E, or T wire with “special limits of error” accuracy. The 

junction of these wires is fusion-welded to form a pure joint, to 

maintain the integrity of the circuit, and to ensure the highest 

accuracy. Grounded junctions are available for improved response 

time and good thermal contact with protection from the 

environment. The ungrounded and isolated junctions provide 

electrical isolation from the sensor sheath (see Figure 11). 

Rosemount thermocouples are encased in a protective metal 

sheath. The sheath material is 304 SST for types J, E, and T, used 

at temperatures up to 871 °C and Inconel for type K, used at 

temperatures up to 1150 °C. Metallic oxide insulation is compacted 

into the sheath to mechanically support and electrically insulate 

the thermocouple wire. See Table 22 for more information on the 

different types of thermocouples. 

FIGURE 11. Series 183 Junction Configurations 

Single, Grounded 

+ 

– 

Single, Ungrounded 

+ 

– 

Dual, Grounded, Unisolated 

+ 

+ 

– 

– 

Dual, Ungrounded, Unisolated 

+ 

+ 

– 

– 

Dual, Ungrounded, Isolated 

+ 

+ 


Performance Specifications 

The thermoelectric current relationship in a thermocouple is 

standardized and defined by ASTM E-230. All Series 183 

Thermocouples conform to these standards with “special limits of 

error” accuracy. The particular characteristics of each ISA type 

thermocouple are outlined in Table 22. 

Physical 


304 SST for types J, E, and T (used at temperatures up to 871 °C). 

Inconel for type K (used at temperatures up to 1150 °C). 

Lead Wires 

Thermocouple, internal—16 AWG solid wire (max), 18 AWG solid 

wire (min.). External lead wires—20 AWG wire, PTFE-insulated. 

Color coded per lead wire configuration schematic shown in Figure 

12. 





Weight 

Capsule sensors: 5 ounces. General-purpose and spring-loaded 

sensors: 9 ounces. 



100 V dc at room temperature. 


When installed properly, Rosemount Series 183 sensors are 

suitable for indoor and outdoor 

NEMA 4X and CSA Enclosure Type 4X installations. See 

Hazardous Area Approvals for complete installation information. 

– 

– 

FIGURE 12. Series 183 Lead Wire Configurations 

Type J 

Type E 

+ White 

+ Purple 

– Red 

– Red 

Type K 

Type T 

+ Yellow 

+ Blue 

– Red 

– Red 

41



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TABLE 18. Series 183 Thermocouple Sensor Assemblies WITHOUT Thermowell 




0183 Thermocouple Sensor WITHOUT Thermowell 









FM 

ATEX 

CSA 

SAA 




G Rosemount SST Connection Head with 1 /2-in. Entries N N N N 

Sensor Type 

Junction 

Capsule Sensor (1)(2) 



01 (1) Single Grounded ★ 

02 Dual Grounded ★ 

03 Single Ungrounded ★ 

04 Dual, Unisolated Ungrounded ★ 

05 Dual, Isolated Ungrounded ★ 

General Purpose Sensors 



11 Single Grounded ★ 





Spring-Loaded Sensors (3) 








Bayonet Spring-Loaded Sensors (4)(5) 

★ 


31 Single Grounded 

32 Dual Grounded 

33 Single Ungrounded 

34 Dual, Unisolated Ungrounded 

35 Dual, Isolated Ungrounded 

Thermocouple Type 




J2 J 0 to 760 °C (32 to 1400 °F) ★ 

K2 K 0 to 1150 °C (32 to 2102 °F) ★ 

E2 E 0 to 871 °C (32 to 1600°F) ★ 

T2 T –180 to 371 °C (–292 to 700 °F) ★ 


Material 






42


00813-0100-2654, Rev GB 

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00 0.0 in. ★ 

30 3.0 in. (X) sensor length = (E) extension length + (L) thermowell length minus 0.25 in. (see ★ 

Figure 4.) 

60 6.0 in. ★ 





Code Sensor/Immersion Length (U length in inches) 



020 2.0-in. ★ 

025 2.5-in. ★ 

030 3.0-in. ★ 

035 3.5-in. ★ 

040 4.0-in. ★ 

045 4.5-in. ★ 

050 5.0-in. ★ 

055 5.5-in. ★ 

060 6.0-in. ★ 

065 6.5-in. ★ 

070 7.0-in. ★ 

075 7.5-in. ★ 

080 8.0-in. ★ 

085 8.5-in. ★ 

090 9.0-in. ★ 

095 9.5-in. ★ 

100 10.0-in. ★ 

105 10.5-in. ★ 

110 11.0-in. ★ 

115 11.5-in. ★ 

120 12.0-in. ★ 

125 12.5-in. ★ 

130 13.0-in. ★ 

135 13.5-in. ★ 

140 14.0-in. ★ 

145 14.5-in. ★ 

150 15.0-in. ★ 

155 15.5-in. ★ 

160 16.0-in. ★ 

165 16.5-in. ★ 

170 17.0-in. ★ 

175 17.5-in. ★ 

180 18.0-in. ★ 

185 18.5-in. ★ 

190 19.0-in. ★ 

195 19.5-in. ★ 

200 20.0-in. ★ 

205 20.5-in. ★ 

210 21.0-in. ★ 

215 21.5-in. ★ 

220 22.0-in. ★ 

225 22.5-in. ★ 

230 23.0-in. ★ 

235 23.5-in. ★ 

43



00813-0100-2654, Rev GB 

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240 24.0-in. ★ 

245 24.5-in. ★ 

250 25.0-in. ★ 

260 26.0-in. ★ 

270 27.0-in. ★ 

280 28.0-in. ★ 

290 29.0-in. ★ 

300 30.0-in. ★ 

310 31.0-in. ★ 

320 32.0-in. ★ 

330 33.0-in. ★ 

340 34.0-in. ★ 

350 35.0-in. ★ 

360 36.0-in. ★ 

370 37.0-in. ★ 

380 38.0-in. ★ 

390 39.0-in. ★ 

400 40.0-in. ★ 

410 41.0-in. ★ 

420 42.0-in. ★ 

430 43.0-in. ★ 

440 44.0-in. ★ 

450 45.0-in. ★ 

460 46.0-in. ★ 

470 47.0-in. ★ 

480 48.0-in. ★ 








E1 (8) ATEX Flameproof approval (See Figure 29) ★ 

Mounting Adapters, Lead Wire Extensions, Connectors, and Seals 



M5-M7 Mounting adapters ★ 

Assembly Options 




(1) This option must be used with Sensor Lead Wire Termination code N and is not available with assembly options XA. 

(2) Cannot be used with approval option codes E1, E5, E6, or E7. See “Mounting Adapters for Series 58, 68, 78, and 183” on page Temperature-66. 

(3) Spring-loaded sensors must be installed in a thermowell assembly to meet the requirement option code E6. 

(4) This option is not available with explosion-proof approval option code E6. 

(5) Bayonet spring-loaded style is available to 45-inches but is not available with Sensor Lead Wire Termination codes R, P, or W. 


(7) SAA Flameproof approvals only applicable if installed with a Rosemount 248, 644, or 3144 transmitter. 

(8) ATEX Flameproof approval is only applicable if ordered with Sensor Lead Wire Terminator code D, R, P. T. or L (Rosemount connection head) or installed with Rosemount 248, 644, 

or 3144P transmitters. 



Typical 

Model 

Number 

Lead Wire 

Extension Extension Thermowell Immersion Additional 

Model Termination Sensor Type ISA Type Type Length Code Length Options 

0183 N 11 J2 N 00 N 045 E5 

44


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TABLE 20. Series 183 Thermocouple Sensor Assemblies WITH Thermowell 




0183 Thermocouple Sensor WITH Thermowell 









FM 

ATEX 

CSA 

SAA 




G Rosemount SST Connection Head with 1 /2-in. Entries N N N N 

Sensor Type 

Junction 

General-Purpose Sensors 







15 Dual, Isolated ★ 

Spring-Loaded Sensors 








Bayonet Spring-Loaded Sensors (1)(2) 


31 Single Grounded 

32 Dual Grounded 

33 Single Ungrounded 

34 Dual, Unisolated Ungrounded 

35 Dual, Isolated Ungrounded 

Thermocouple Type 




J2 J 0 to 760 °C (32 to 1400 °F) ★ 

K2 K 0 to 1150 °C (32 to 2102 °F) ★ 

E2 E 0 to 871 °C (32 to 1600°F) ★ 

T2 T –180 to 371 °C (–292 to 700 °F) ★ 


Material 









00 0.0 in. ★ 

30 3.0 in. ★ 

60 6.0 in. ★ 




A Type 316 SST (4) ★ 



45



00813-0100-2654, Rev GB 

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D 316L SST ★ 

E 

304L SST 


F Alloy 20 

G Alloy 400 

H Alloy 600 

J Alloy C-276 

L 

Alloy B 

M 


P 


R Nickel 200 

T 

Titanium 


V 

310 SST 

W 

321 SST 

Z 


Sensor/Immersion Length (U (6) length in 

inches) (L) Length in Inches T (7) Length in Inches 



015 (8) 1.5-in. 4.0-in. 1.0-in. ★ 

020 (6) 2.0-in. 4.0-in. 0.5-in. ★ 

025 (6) 2.5-in. 4.0-in. 0.0-in. ★ 

030 3.0-in. 6.0-in. 1.5-in. ★ 

035 3.5-in. 6.0-in. 1.0-in. ★ 

040 4.0-in. 6.0-in. 0.5-in. ★ 

045 4.5-in. 6.0-in. 0.0-in. ★ 

050 5.0-in. 9.0-in. 2.5-in. ★ 

055 5.5-in. 9.0-in. 2.0-in. ★ 

060 6.0-in. 9.0-in. 1.5-in. ★ 

065 6.5-in. 9.0-in. 1.0-in. ★ 

070 7.0-in. 9.0-in. 0.5-in. ★ 

075 7.5-in. 9.0-in. 0.0-in. ★ 

080 8.0-in. 12.0-in. 2.5-in. ★ 

085 8.5-in. 12.0-in. 2.0-in. ★ 

090 9.0-in. 12.0-in. 1.5-in. ★ 

095 9.5-in. 12.0-in. 1.0-in. ★ 

100 10.0-in. 12.0-in. 0.5-in. ★ 

105 10.5-in. 12.0-in. 0.0-in. ★ 

110 11.0-in. 15.0-in. 2.5-in. ★ 

115 11.5-in. 15.0-in. 2.0-in. ★ 

120 12.0-in. 15.0-in. 1.5-in. ★ 

125 12.5-in. 15.0-in. 1.0-in. ★ 

130 13.0-in. 15.0-in. 0.5-in. ★ 

135 13.5-in. 15.0-in. 0.0-in. ★ 

140 14.0-in. 18.0-in. 2.5-in. ★ 

145 14.5-in. 18.0-in. 2.0-in. ★ 

150 15.0-in. 18.0-in. 1.5-in. ★ 

155 15.5-in. 18.0-in. 1.0-in. ★ 

160 16.0-in. 18.0-in. 0.5-in. ★ 

165 16.5-in. 18.0-in. 0.0-in. ★ 

170 17.0-in. 21.0-in. 2.5-in. ★ 

175 17.5-in. 21.0-in. 2.0-in. ★ 

180 18.0-in. 21.0-in. 1.5-in. ★ 

185 18.5-in. 21.0-in. 1.0-in. ★ 

190 19.0-in. 21.0-in. 0.5-in. ★ 

195 19.5-in. 21.0-in. 0.0-in. ★ 

200 20.0-in. 24.0-in. 2.5-in. ★ 

205 20.5-in. 24.0-in. 2.0-in. ★ 

210 21.0-in. 24.0-in. 1.5-in. ★ 

215 21.5-in. 24.0-in. 1.0-in. ★ 

46


00813-0100-2654, Rev GB 

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220 22.0-in. 24.0-in. 0.5-in. ★ 

225 22.5-in. 24.0-in. 0.0-in. ★ 








T24 (4) Threaded 1-11.5 ANPT Stepped ★ 

T26 Threaded 


T28 Threaded 1-11.5 ANPT Tapered ★ 

T30 Threaded 1 1 /2-11 ANPT Tapered ★ 

T32 Threaded 


T34 Threaded 


T36 Threaded 1-11.5 ANPT Straight ★ 

T38 Threaded 


T44 Threaded 


W38 Welded 



W42 Welded 




W48 Welded 


W50 Welded 1-in. pipe Straight ★ 


































Q04c Sanitary, Tri-Clamp 1 1 /2-in., Tri-Clamp Stepped ★ 



47



00813-0100-2654, Rev GB 

April 2010 




















M5-M7 Mounting adapter: Sensor Compression Fitting: M5 = 1 /8-27 NPT, M6 = 1 /4-18 NPT, M7 = 1 /2-14 NPT ★ 

















NACE Approval 















R09 (12)(13) Concentric Serrations of Thermowell Flange Face ★ 





Vent Hole 











R14 Special Surface Finish (12 Ra Maximum “U” length = 22.5-in.) ★ 




R16 (11)(12) Ring joint flange (Not available with 0-in. (T) length) ★ 

Electropolish 








48


00813-0100-2654, Rev GB 

April 2010 






























R37 Thermowell from Hex stock 





(1) This option is not available with explosion-proof approval option codes E1, E5, E6, or E7. 

(2) Bayonet spring-loaded style available to 45 inches. Codes 31 - 35 are not available with Sensor Lead Wire Termination codes R or P. 



(5) Available only with straight stem thermowells. 

(6) Thermowells with an overall length (“U” + “T” + 1.75-in.) of 36-in. or less are machined from solid barstock. Thermowells with an overall length larger than 42-in. will be constructed 


(7) For additional (T) lengths, see Table 28 on page Temperature-71. 

(8) Straight or Tapered stem thermowells only. 

(9) Cannot be used with 0-in. (T) length. F08 cannot be used with 0- or 1 /2-in. (T) length 


(11) SAA Flameproof approvals only applicable if installed with a Rosemount 248, 644, or 3144P transmitter. 





Typical 

Model 

Number 

Lead Wire Sensor 

Extension Extension Material Immersion Mounting Additional 

Model Termination Type ISA Type Type Length Code Length Style Options 

0183 N 21 J2 A 30 A 075 T22 E5 

49



00813-0100-2654, Rev GB 

April 2010 

Comparison of Thermocouples 

80 

Type E 

60 

Type K Type K 

Millivolts (approx.) 

40 

Type J 

20 

Type T 

0 

32 1000 2000 

Degrees Farenheit 

Thermocouple 

Type J 

Iron / Constantan 

Type K 

Chromel / Alumel 

Type E 

Chromel / Constantan 

Type T 

Copper /Constantan 

Conditions for Use 

Maximum operating temperature of 760 °C (1400 °F). Used with or without protective tubing where deficiency of free oxygen 

exists. Protective tube not essential, but desirable for cleanliness and longer service. 

Suitable for extended use in temperature reaching 1150 °C (2102 °F). Use of metal or ceramic protective tube desirable, 

especially in reducing atmospheres. in oxidizing atmospheres, protective tubing necessary only to promote cleanliness and 

longer service. 

Suitable for use at temperature p to 900 °C (1652 °F) in vacuum r inert, mildly oxidizing or reducing atmosphere. Not subject to 

corrosion at cryogenic temperatures. Has highest EMF output per degree of all commonly used thermocouples. 

Operating temperature range of –180 to 371 °C (–292 to 700 °F). Use in either oxidizing or reducing atmospheres. Protective 

tubing necessary only to promote cleanliness and longer service. Stable at lower temperature. Superior for a wide variety of uses 

in cryogenic temperatures. 

TABLE 22. Characteristics of Series 183 Thermocouple Types 

ISA 

Thermocouple 

Types 

Thermocouple Wire 

Alloys 


°C °F 

Limits of Error (Interchangeability) 

J Iron/Constantan 0 to 760 32 to 1400 ±1.1 °C or ±0.4% of measured temperature, whichever is greater 

K Chromel/Alumel 0 to 1150 32 to 2102 ±1.1 °C or ±0.4% of measured temperature, whichever is greater 

E Chromel/Constantan 0 to 871 32 to 1600 ±1.0 °C or ±0.4% of measured temperature, whichever is greater 

T Copper/Constantan –180 to 0 –292 to 32 ±1.0 °C or ±1.5% of measured temperature, whichever is greater 

0 to 371 32 to 700 ±0.5 °C or ±0.4% of measured temperature, whichever is greater 

50


00813-0100-2654, Rev GB 

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Calibration 

CALIBRATION OPTIONS 

Sensor calibration may be required for input to quality systems, or 

for control system enhancement. More frequently, it is used to 

improve the overall temperature measurement performance by 

matching the sensor to a temperature transmitter. 

Transmitter-Sensor matching is available for RTD sensors used 

with Rosemount 644, 3144P, and 3244MV temperature 

transmitters where the inherent stability and repeatability of the 

RTD technology is well established. 

Transmitter-Sensor Matching 

Using Callendar-Van Dusen Constants 

Significant temperature measurement accuracy improvement can 

be attained using a temperature sensor that is matched to a 

temperature transmitter. This matching process entails teaching 

the temperature transmitter the relationship between resistance 

and temperature for a specific RTD sensor. This relationship, 

approximated by the Callendar-Van Dusen equation, described as: 

R t = R o + R o [t –(0.01t – 1)(0.01t) – (0.01t – 1)(0.01t) 3 ], 

where: 

R t = Resistance (ohms) at Temperature t (°C) 

R o = Sensor-Specific Constant (Resistance at t = 0 °C) 

=Sensor-Specific Constant 

=Sensor-Specific Constant 

=Sensor-Specific Constant (0 at t > 0 °C, 0.11 at t < 0°C) 

The exact values for R 0 , – known as Callendar-Van Dusen 

(CVD) constants – are specific to each RTD sensor, and are 

established by testing each individual sensor at various 

temperatures. 

The calibration temperature values using the CVD equation are 

divided into two major temperature areas: above 0 °C and below 0 

°C. The calibration for the temperature range between 0 and 660 

°C is obtained from the following formula: 

 

t 

R t R 0 1 t – -------- 

 

t 

-------- – 1 

 

= + 

100100 

 

 

 

Note that this is a modification of the fourth-order CVD equation 

where = 0 for temperatures greater than 0 °C. Since this 

modified equation is a second-order degree equation, at least 

three distinct temperature values are needed in order to curve fit 

the behavior of the RTD. For the temperature range from 0 to 100 

°C only these two end points are used, and an approximation is 

made to render the constants. 

Once the sensor-specific constants are entered, the transmitter 

uses them to generate a custom curve to best describe the 

relationship between resistance and temperature for the particular 

sensor and transmitter system. Matching a Series 68 or 78 RTD 

sensor to a 644, 3144P, and 3244MV transmitter typically results in 

a 3- or 4-fold improvement in temperature measurement accuracy 

for the total system. This substantial system accuracy 

improvement is realized as a result of the transmitter’s ability to 

use the sensor’s actual resistance-vs.-temperature curve instead 

of an ideal curve. 

An example of the benefits of using the sensor matching capability 

of a Rosemount 3144P Temperature transmitter along with a 

matched Series 68 RTD sensor are shown in Typical 

Transmitter-Sensor Matching Uncertainty Improvements. 

Calibration Uncertainty 

Calibration uncertainties of the lab are equal to or better than 1 /10 

IEC 751 Class B interchangeability: 

Uncertainty = 0.03 + 0.0005 t 

t = absolute value of temperature in °C 

51



00813-0100-2654, Rev GB 

April 2010 

TYPICAL TRANSMITTER-SENSOR MATCHING UNCERTAINTY IMPROVEMENTS 

Transmitter: 3144 (has built-in sensor matching 

capabilities), span of 1 to 200 °C, accuracy = 0.1 °C) 


Sensor Interchangeability 

Error 

Total Calibrated Sensor 

Uncertainty (1) 

Sensor: Series 68 RTD °C °F °C °F °C °F 

Callendar van Dusen Option: V2 0 32 ±0.30 ±0.54 ±0.10 ±0.18 

Process Temperature: 150 °C 50 122 ±0.55 ±0.99 ±0.17 ±0.31 

100 212 ±0.80 ±1.44 ±0.22 ±0.40 

150 302 ±1.05 ±1.89 ±0.18 ±0.32 

200 392 ±1.30 ±2.34 ±0.16 ±0.29 

(1) Includes calibration uncertainties of the lab, hysteresis, and repeatability. 

1.0 °C 

0.75 °C 

0.5 °C 

1.05 °C 


System Uncertainty Comparison at 150 °C: 

Standard 68 Sensor 

Rosemount 3144: ± 0.10 °C 

Standard Series 68 RTD: ± 1.05 °C 

Total System (1) : ± 1.05 °C 

68 Sensor with V2 Option 

Rosemount 3144: ± 0.10 °C 

Standard Series 68 RTD: ± 0.18 °C 

0.22 °C 

Total System (1) : ± 0.21 °C 

With Sensor 

Matching 

(1) Calculated using RSS statistical method: 

SystemAccuracy 

= 

TransmitterAccuracy 2 + SensorAccuracy 2 


Sensor Characterization 

(Calibration) Schedules– Option Code V 

Series 68, 68Q, and 78 RTD sensors can be ordered with an 

option (V1, V2,...V7, see Option Code “V” Callendar-van Dusen 

Constants), that provides Callendar-Van Dusen constants that are 

shipped with the sensor. When you order this option, the values of 

all four sensor-specific constants are physically attached to each 

sensor with a wire-on tag. Rosemount 644, 3144P, and 3244MV 

have a unique, built-in sensor matching capability. To use this 

capability, the four sensor-specific constants are programmed into 

the 644, 3144P, and 3244MV at the factory by ordering a C2 

option on the transmitter, or easily entered and changed in the 

field using a HART Communicator or AMS. When these values are 

entered into a Rosemount 644, 3144P, and 3244MV, the sensor 

and transmitter become matched. 

Each “V” option is specific to a particular temperature range for a 

given sensor type (see Option Code “V” Callendar-van Dusen 

Constants). As with option code X8Q4, the accuracies associated 

with each option code represent worst-case conditions when the 

sensor is used over the entire temperature range. 

For applications requiring the increased accuracy obtainable 

through a matched sensor and transmitter, order the appropriate 

“V” option (seeOption Code “V” Callendar-van Dusen Constants). To 

ensure optimal performance, select a “V” option such that the 

sensor’s range of actual operation is between the minimum and 

maximum calibration points. 

The accuracy (uncertainty) of different calibration points varies 

because each calibration schedule has specific hysteresis and 

repeatability characteristics. For example, the accuracy of 

calibration points at 100 °C for options V1 and V2 differs because 

of the two different temperature ranges. 

NOTE 

An RTD ordered with the V option is shipped with CVD constants 

only; it does not include calibration tables. 

52


00813-0100-2654, Rev GB 

April 2010 


OPTION CODE “V” CALLENDAR-VAN DUSEN CONSTANTS 

Option 

Code 



Calibration 

Points 

Uncertainty (1) of 

Calibration Lab 

Series 68 

FIGURE 13. Typical Sensor Ordered with Option Code V 

Total Uncertainty (2) of Calibrated Sensor 

Series 78 


Series 78 High 


°C °F °C °F °C °F °C °F °C °F °C °F 

V1 (3) 0 to 100 32 to 212 0 32 ±0.03 ±0.05 ±0.06 ±0.11 ±0.06 ±0.11 ±0.06 ±0.11 

100 212 ±0.08 ±0.14 ±0.10 ±0.18 ±0.10 ±0.18 ±0.10 ±0.18 

V2 (3) 0 to 200 32 to 392 0 32 ±0.03 ±0.05 ±0.10 ±0.18 ±0.09 ±0.16 ±0.10 ±0.18 

100 212 ±0.08 ±0.14 ±0.22 ±0.40 ±0.15 ±0.27 ±0.23 ±0.41 

200 392 ±0.13 ±0.23 ±0.16 ±0.29 ±0.15 ±0.27 ±0.16 ±0.29 

V3 (3) 0 to 400 32 to 752 0 32 ±0.03 ±0.05 ±0.20 ±0.29 ±0.16 ±0.29 ±0.20 ±0.29 

200 392 ±0.13 ±0.23 ±0.42 ±0.76 ±0.29 ±0.52 ±0.44 ±0.79 

400 752 ±0.23 ±0.41 ±0.30 ±0.54 ±0.28 ±0.50 ±0.30 ±0.54 

V4 (3)(4) 0 to 600 32 to 1112 0 32 ±0.03 ±0.05 NA ±NA NA NA NA NA 

200 392 ±0.13 ±0.23 NA ±NA NA NA NA NA 

400 752 ±0.23 ±0.41 NA ±NA NA NA NA NA 

V5 (3) –50 to 100 –58 to 212 0 32 ±0.03 ±0.05 ±0.08 ±0.14 ±0.06 ±0.11 ±0.09 ±0.16 

100 212 ±0.08 ±0.14 ±0.10 ±0.18 ±0.10 ±0.18 ±0.10 ±0.18 

V6 (3) –50 to 200 –58 to 392 –50 –58 ±0.06 ±0.10 ±0.14 ±0.25 ±0.11 ±0.20 ±0.14 ±0.25 

0 32 ±0.03 ±0.05 ±0.20 ±0.36 ±0.14 v0.25 ±0.21 ±0.38 

100 212 ±0.08 ±0.14 ±0.26 ±0.47 ±0.18 ±0.32 ±0.27 ±0.49 

200 392 ±0.13 ±0.23 ±0.18 ±0.32 ±0.16 ±0.29 ±0.17 ±0.3 

V7 (3) –50 to 400 –58 to 752 –50 –58 ±0.06 ±0.10 ±0.23 ±0.41 ±0.19 ±0.34 ±0.23 ±0.41 

0 32 ±0.03 ±0.05 ±0.31 ±0.56 ±0.22 ±0.40 ±0.32 ±0.58 

200 392 ±0.13 ±0.23 ±0.46 ±0.83 ±0.31 ±0.56 ±0.48 ±0.86 

400 752 ±0.23 ±0.41 ±0.32 ±0.58 ±0.29 ±0.52 ±0.32 ±0.58 

(1) Includes only the uncertainly of the lab. 

(2) Includes the uncertainty of the lab, hysteresis, and repeatability. 

(3) Uncertainties are valid for option code X8Q4 when ordered with the corresponding temperature range. The largest error shown in each temperature range is the worst case error 

for all points not shown in that range. 

(4) Only available with Series 78 High Temperature Sensors 10-in. or longer. 

Specify Sensor Model Number with “V” Option Example 

Sensor Model 0068 N 11 N 00 N 120 V2 

53


Option Code X8Q4 

The X8Q4 option calibrates the sensor to a customer-specified 

temperature range. The X8Q4 report includes the Callendar-Van 

Dusen (CVD) constants (R o , , , ), a resistance-versustemperature 

table in one-degree increments, and a graph which 

includes the maximum errors due to the uncertainty of the 

calibration equipment, hysteresis, and repeatability. The values in 

the tables are calculated using Callendar-Van Dusen 

methodology. Two of the values on this table could be used to 

perform a two-point trim. The X8Q4 option also provides the CVD 

constants on a stainless steel tag attached to the sensor. 

See Figure 16. 


00813-0100-2654, Rev GB 

April 2010 

FIGURE 14. Graph of a Typical Two-point Trim 

Resistance () 

Temperature (°C) 

A two-point trim 

shifts the ideal curve 

up or down, and 

changes the slop 

based on the two 

characterized 

points. 

Option X8Q4: Sensor Calibrated to a Customer-Specified Temperature Range 

When you order an RTD with the X8Q4 option, you must specify a temperature range over which the sensor is to be calibrated. Before 

specifying the range, take careful note of the sensor temperature limits. 

Ordering Example: 

Typical 

Model 

Number 

Model 

Lead Wire 

Termination 

Sensor 

Type 

Extension 

Type 

Extension 

Length 

Thermowell 

Material 

Immersion 

Length 

Additional 

Options 

0068 N 11 N 00 N 045 X8Q4 

X8X9Q4 

If X8Q4 and X9Q4 are both required, do not repeat the “Q4” code in the model string. Include the following instead: 

Calibrate from –10 to 120 °C 

Option Code X9Q4 

The X9Q4 option calibrates the sensor at a single 

customer-specified point. A calibration certificate with the 

resistance value at this point is supplied. This value could be used 

to perform a one-point trim on the transmitter.All characterizations 

are traceable to the National Institute of Standards and Technology 

(NIST). The calibration table is dated and marked with the sensor 

series and serial number. 

See Figure 17. 

NOTE 

The X9Q4 option can be ordered and used in conjunction with the 

X8Q4 option. 

FIGURE 15. Graph of a Typical One-point Trim 

Resistance () 

Temperature (°C) 

A one-point trim shifts the ideal curve up or down based on the 

single characterized point. 

Option X9Q4: Sensor Calibrated to a Customer-Specified Single Point 

When you order an RTD with theX9Q4 option, you must specify a single temperature point at which the sensor is to be calibrated. Before 

specifying the point, take careful note of the sensor temperature limits. 

Ordering Example: 

Typical 

Model Model 

Lead Wire 

Termination 

Sensor 

Type 

Extension 

Type 

Extension 

Length 

Thermowell 

Material 

Immersion 

Length 

Additional 

Options 

Number 

0068 N 11 N 00 N 045 X9Q4 

If X8Q4 and X9Q4 are both required, do not repeat the “Q4” code in the model string. Include the following instead: 

X8X9Q4 

Calibrate at 50 °C 

54


00813-0100-2654, Rev GB 

April 2010 


FIGURE 16. Example of Report Provided with X8Q4 Option 

55



00813-0100-2654, Rev GB 

April 2010 

56


00813-0100-2654, Rev GB 

April 2010 


57



00813-0100-2654, Rev GB 

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58


00813-0100-2654, Rev GB 

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59



00813-0100-2654, Rev GB 

April 2010 

FIGURE 17. Example of Report Provided with X9Q4 Option 

60


00813-0100-2654, Rev GB 

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61



00813-0100-2654, Rev GB 

April 2010 

TABLE 23. Option Code X9Q4 Calibration Uncertainties for the Series 68 and 78 Standard and High Temperature 

Temperature Uncertainty of Calibration Lab (1) 

(1) Includes only the uncertainty of the lab. 

(2) Includes uncertainty of the lab and repeatability. 

TABLE 24. Resistance vs. Temperature 

Total Uncertainty of Calibrated Sensor (2) 

°C °F °C °F °C °F 

–50 –58 0.06 0.10 0.07 0.13 

0 32 0.03 0.05 0.06 0.11 

100 212 0.08 0.14 0.09 0.16 

200 392 0.13 0.23 0.14 0.25 

400 752 0.23 0.41 0.24 0.43 

IEC 751 

Platinum 100, = 0.00385 RTD 

°F Ohms °F Ohms °F Ohms °C Ohms °C Ohms °C Ohms 

–330 18.04 210 138.08 690 235.15 –200 18.52 90 134.71 380 240.18 

–320 20.44 220 140.19 700 237.09 –190 22.83 100 138.51 390 243.64 

–310 22.83 230 142.29 710 239.02 –180 27.10 110 142.29 400 247.09 

–300 25.20 240 144.39 720 240.95 –170 31.34 120 146.07 410 250.53 

–290 27.57 250 146.49 730 242.87 –160 35.54 130 149.83 420 253.96 

–280 29.93 260 148.58 740 244.79 –150 39.72 140 153.58 430 257.38 

–270 32.27 270 150.67 750 246.71 –140 43.88 150 157.33 440 260.78 

–260 34.61 280 152.75 760 248.62 –130 48.00 160 161.05 450 264.18 

–250 36.94 290 154.83 770 250.53 –120 52.11 170 164.77 460 267.56 

–240 39.26 300 156.91 780 252.44 –110 56.19 180 168.48 470 270.93 

–230 41.57 310 158.98 790 254.34 –100 60.26 190 172.17 480 274.29 

–220 43.88 320 161.05 800 256.24 –90 64.30 200 175.86 490 277.64 

–210 46.17 330 163.12 810 258.14 –80 68.33 210 179.53 500 280.98 

–200 48.46 340 165.18 820 260.03 –70 72.33 220 183.17 510 284.30 

–190 50.74 350 167.24 840 263.80 –60 76.33 230 186.84 520 287.62 

–180 53.02 360 169.30 850 265.68 –50 80.31 240 190.47 530 290.92 

–170 55.29 370 171.35 860 267.56 –40 84.27 250 194.10 540 294.21 

–160 57.55 380 173.40 870 269.44 –30 88.22 260 197.71 550 297.49 

–150 59.81 390 175.45 880 271.31 –20 92.16 270 201.31 560 300.74 

–140 62.06 400 177.49 890 273.17 –10 96.09 280 204.90 570 304.01 

–130 64.30 410 179.53 900 275.04 0 100.00 290 208.48 580 307.25 

–120 66.54 420 181.56 910 276.90 10 103.90 300 212.05 590 310.49 

–110 68.77 430 183.59 920 278.75 20 107.79 310 215.61 600 313.71 

–100 71.00 380 173.40 930 280.61 30 111.67 320 219.15 610 316.92 

–90 73.22 390 175.45 940 282.46 40 115.54 330 222.68 620 320.12 

–80 75.44 400 177.49 950 284.30 50 119.40 340 226.21 630 323.30 

–70 77.66 410 179.53 960 286.14 60 123.24 350 229.72 640 326.48 

–60 79.86 420 181.56 970 287.98 70 127.08 360 233.21 650 329.64 

–50 82.07 430 183.59 980 289.82 80 130.90 370 236.70 660 332.79 

–40 84.27 450 187.65 990 291.65 

–30 86.47 460 189.67 1000 293.48 

–20 88.66 470 191.68 1010 295.30 

–10 90.85 480 193.70 1020 297.12 

0 93.03 490 195.71 1030 298.94 

10 95.21 500 197.71 1040 300.75 

20 97.39 510 199.71 1050 302.56 

30 99.57 520 201.71 1060 304.37 

40 101.74 530 203.71 1070 306.17 

50 103.90 540 205.70 1080 307.97 

60 106.07 550 207.69 1090 309.77 

70 108.23 560 209.67 1100 311.56 

80 110.38 570 211.66 1110 313.35 

90 112.53 580 213.63 1120 315.14 

100 114.68 590 215.61 1130 316.92 

110 116.83 600 217.58 1140 318.70 

120 118.97 610 219.55 1150 320.47 

130 121.11 620 221.51 1160 322.24 

140 123.24 630 223.47 1170 324.01 

150 125.37 640 225.42 1180 325.77 

160 127.50 650 227.38 1190 327.53 

170 129.62 660 229.33 1200 329.29 

180 131.74 670 231.27 1210 331.04 

190 133.86 680 233.21 

200 135.97 

Note 

To covert from °C to °F: {1.8 X (°C)] + 32 = °F 

Example: (1.8 X 100) + 32 = 212 °F 

To convert from °F to °C: 0.556 [(°F) – 32] = 100 °F 

Example: 0.556 (212 – 32) = 100 °C 

62


00813-0100-2654, Rev GB 

April 2010 


Mounting Accessories 

ROSEMOUNT CONNECTION HEAD 

The Rosemount Connection head is for general-purpose and 

spring-loaded sensors. The terminal block has six terminals for 

either single or dual element sensors. If the sensor assembly is 

ordered assembled to a Rosemount 248 or 644H head mount 

transmitter then the terminal block is replaced by the transmitters. 


Sensor Connection 

• 1 /2–14 NPT mounting thread. Screw terminals for lead wire 

connections. 

Electrical Connection 

• 1 /2–14 NPT conduit 

Materials of Construction 

• Housing: Low copper aluminum 

• Paint: Polyurethane 

• Cover O-ring: Buna-N 

Weight 

• 18.5 oz (524 g) 

Enclosure Rating 

• NEMA 4X, IP66, and IP68 

POLYPROPYLENE CONNECTION HEAD 

The polypropylene connection head (part number 

00644-4198-0011) is designed for use with sanitary sensors. It is 

FDA-compliant, and is resistant to attack by acids, alkalies, and 

organic solvents. 



• 1 /2–14 NPT mounting thread. Screw terminals for lead wire 

connections 


• 1 /2–14 NPT conduit 


• Housing: White polypropylene polymer 

• O-Ring Seal: Silicone rubber 

• Terminals: Nickel-plated brass 

Temperature Limits 

• –73 to 104 °C (–100 to 220 °F) 

Weight 

• 0.5 lb 

CONNECTION HEAD 

The Extended Cover Connection Head (P/N 00079-0324-xxxx) 

provides the additional space required by sensors that have 

bayonet connectors. This model can also be used with 

general-purpose and spring-loaded sensors. The terminal block 

has six terminals for either single- or dual-element sensors. 

The Flat Cover Connection Head (P/N 00079-0325-xxxx) is for 

general-purpose and spring-loaded sensors. The terminal block 

has six terminals for either single- or dual-element sensors. 



• 1 /2–14 ANPT mounting thread. Screw terminals for lead wire 

connections 


• 3 /4–14 ANPT conduit 


• Housing: Low-copper aluminum alloy 

• O-Ring Seal: Silicone rubber 

• Terminals: Nickel-plated brass 

Temperature Limits 

Head 

Type Unapproved E5 option E6 option E1 option 

Painted –100 to 100 °C 

–148 to 212 °F 

–50 to 85 °C 

–58 to 185 °F 

–50 to 85 °C 

–58 to 185 °F 

–40 to 65 °C 

–40 to 149 °F 

Unpainted –100 to 200 °C 

–148 to 392 °F 


–50 to 85 °C 

–58 to 185 °F 

–50 to 200 °C 

–58 to 392 ° 

–40 to 65 °C 

–40 to 149 °F 

• When installed properly, painted connection heads are 


Type 4X installations. When installed properly, unpainted 

connection heads are suitable for NEMA 4 and CSA 

Enclosure Type 4 installations. See Hazardous Area 

Approvals for complete installation information 

Weight 

• 2 lb 8 oz (extended cover) 

• 1 lb 9 oz (flat cover) 

63



00813-0100-2654, Rev GB 

April 2010 

Connection Head Model Numbers 

Model 

Description 

00644-4410-0011 Rosemount Connection Head, painted aluminum 

007903252003 Six Terminals with Flat Cover, 

Unapproved, Unpainted 

007903242003 Six Terminals with Extended Cover, 

Unapproved, Unpainted 

007903250002 Six Terminals with Flat Cover, FM 

Approved, Unpainted 


FM Approved, Unpainted 

007903250003 Six Terminals with Flat Cover, CSA 

Approved, Unpainted 


CSA Approved, Unpainted 

007903252005 Six Terminals with Flat Cover, 

Unapproved, Painted 


Unapproved, Painted 

007903250004 Six Terminals with Flat Cover, FM 

Approved, Painted 


FM Approved, Painted 

007903250005 Six Terminals with Flat Cover, CSA 

Approved, Painted 


CSA Approved, Painted 

00644-4198-0011 No Approval Options, 

White Polypropylene 

00065-0305-0001 Round Terminal Block for Rosemount and 

Polypropylene heads 

006444-4431-0001 External ground Screw Assembly for Rosemount 

Connection Head 

00644-4435-0011 Polypropelyne Connection Head with Terminal 

Block 1 /2 in. NPT entries 

00079-0329-0001 Kit of 12 Silicone Rubber O-rings for 

Flat/Extended Heads 

Connection Head Dimensional Drawing 

Rosemount Connection Head 

78 

Polypropylene 

118 (4.65) 

104 

100 

84 (3.331) 

Flat Cover Extended Cover Terminal View 

3.5 

(89) 

5.5 

(140) 

4.9 

(124) 

1 /2–14 ANPT 

3 /4–14 ANPT 

Chain Terminal Block (6 terminals) 


64


00813-0100-2654, Rev GB 

April 2010 

EXTENSION FITTING ASSEMBLIES 

Extension fitting assemblies are available in 

• a coupling and nipple assembly 

• a union and nipple assembly 

FIGURE 18. Extension Fitting 

Length (E) (Nominal) 

Coupling and Nipple 

Assembly 


Choosing an Extension 

Aside from ambient temperature variations, the heat from the 

process is transferred from the thermowell to the transmitter 

housing. If the process temperature is near or beyond specification 

limits, consider the use of additional thermowell lagging, an 

extension nipple, or a remote mounting configuration to isolate the 

transmitter from the excessive temperatures. Use Figure 19 and 

the example below to determine an adequate thermowell 

extension length. 

0.53 (13) Max. Thread Engagement (½–14 ANPT Ref.) 

FIGURE 19. 3144 Transmitter Housing Temperature Rise 

versus Extension Length for a Test Installation 

TABLE 25. Extension 

Coupling and Nipple, SST 

Union and Nipple 

Assembly 


Union and Nipple, SST 

Model Number Length (E) Model Number Length (E) 

007903540250 2.5-in. 007903550250 2.5-in. 

007903540300 3.0-in. (1) 007903550300 3.0-in. (1) 

007903540350 3.5-in. 007903550350 3.5-in. 

007903540400 4.0-in. 007903550400 4.0-in. 

007903540450 4.5-in. 007903550450 4.5-in. 

007903540500 5.0-in. 007903550500 5.0-in. 

007903540550 5.5-in. 007903550550 5.5-in. 

007903540600 6.0-in. (1) 007903550600 6.0-in. (1) 

007903540650 6.5-in. 007903550650 6.5-in. 

007903540700 7.0-in. 007903550700 7.0-in. 

007903540750 7.5-in. 007903550750 7.5-in. 

007903540800 8.0-in. 007903550800 8.0-in. 

007903540850 8.5-in. 007903550850 8.5-in. 

007903540900 9.0-in. 007903550900 9.0-in. 

(1) Standard configuration with best delivery. Also available for emergency 

requirements. Consult factory for information. 

HOUSING 

RISE ABOVE 

AMBIENT (°C) 

60 

50 

40 

30 

20 

10 

0 

815 °C Oven Temperature 

540 °C Oven 


250 °C Oven Temperature 

3 4 5 6 7 8 9 

“N” LENGTH (in.) 

Example 

The rated ambient temperature specification is 85 °C. If the 

maximum ambient temperature is 40 °C and the process 

temperature to be measured is 540 °C, the maximum allowable 

housing temperature rise is the rated temperature specification 

limit minus the existing ambient temperature (85 – 40), or 45 °C. 

As shown in Figure 19, an extension (E) dimension of 3.0-in (76 

mm) will result in a housing temperature rise of 30 °C. An “E” 

dimension of 3-in. would therefore be the minimum recommended 

length, and would provide a safety factor of about 15 °C. A longer 

“E” dimension, such as 6-in. (152 mm), would be desirable in order 

to reduce errors caused by transmitter temperature effect, 

although in that case the transmitter would probably require extra 

support. If a thermowell with lagging is used, the “E” dimension 

may be reduced by the length of the lagging. 

65



00813-0100-2654, Rev GB 

April 2010 

MOUNTING ADAPTERS FOR SERIES 58, 68, 78, AND 183 

M5–M7, Sensor Compression Fittings, 316 SST 

• For adjustable sensor length. 

• For low pressure applications 

(100 psig maximum). 

• Fits ¼-inch diameter sensors. 

• Available with 1 /8–27 (M5), ¼–18 (M6), and ½–14 (M7) ANPT 

process threads. 

• Not available on spring-loaded sensors. 

Fitting Diameter 

Sensor Process Thread 

Length 

TABLE 26. Compression Fittings, 316 SST 

(for attachment to the stem of the capsule) 

Model Number Option Code Sensor Process Thread Fitting Diameter Length 

in. mm in. mm 

C07961-0005 M5 

1 /8–27 ANPT 0.25 6.35 1.31 33.27 

C07961-0006 M6 

1 /4–18 ANPT 0.25 6.35 1.5 38.1 

C07961-0008 M7 

1 /2–14 ANPT 0.25 6.35 1.75 44.45 

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00813-0100-2654, Rev GB 

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LEAD WIRE EXTENSIONS, CONNECTORS, AND SEALS 

The following options are available on most Series 68 and 78 sensors. They are not available for use on Series 58C, 68Q, and 183 sensors or 

with SAA or ATEX/ISSeP Flameproof approval (Option Codes E7 or E1). 

Twisted Lead WIre Extension 

(Option Codes A1 – A8) 

(Capsule Sensor Only) 

(Capsule Sensor with Standard Adapter) 

Shielded Cable Lead Wire Extension 

(Option Codes B1 – B8) 

Armored Cable Lead Wire Extension 

(Option Codes C1 – C8) 

Armored Cable 

Mating Plug with Lead 

Wire Extension 

(Option Codes L1 – L8) 

Armored Cable Lead Wire Extension with 

Electrical Plug 

(Option Codes D1 – D8) 

4-Pin Connector 

(Option Codes H1 – H8) 

Moisture-Proof Seal Assembly for 

Armored Cable (Option Code J1) 

Bayonet Connector 

(Option Code F1) 

3244MV Transmitter 

Armored Cable Lead Wire Extension (Option Codes C1 – C8) 

A1–A8, Twisted Lead Wire Extension 

• Lead wire connections are silver brazed and 

individually insulated by shrinkable PTFE tubes 

• Withstands 95 percent relative humidity 

• 200° C (392° F) maximum temperature 

• Available with single or dual-element sensors 

Option Code Y Length (ft) Option Code Y Length (ft) 

A1 1 1 /2 A5 24 

A2 3 A6 50 

A3 6 A7 75 

A4 12 A8 100 

22-Gauge PTFE Lead Wire 

PTFE 

Sensor 

6 (152) [Ref.] 

Y 

Not available for use with Series 68Q Sanitary RTDs and 183 thermocouples or with SAA or ATEX/ISSeP flameproof approval (option codes 

E7 or E1) 


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00813-0100-2654, Rev GB 

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B1–B8, Shielded Cable Lead Wire Extension 

• Copper shielded cable prevents electrical noise distortions to 

sensor signal output 




B1 1 1 /2 B5 24 

B2 3 B6 50 

B3 6 B7 75 

B4 12 B8 100 

Shielded Cable PTFE Jacket 

22-Gauge PTFE-Insulated Wires 

Rubber Seal 

0.25 (6) [Approx.] 

0.375 (10) Diameter 

Sensor 

Y 

2.75 (70) [max.] 

Not available for 58C, 68Q, and 183 sensors or with SAA or ATEX/ISSeP flameproof approval (option codes E7 or E1) 


C1–C8, Armored Cable Lead Wire Extension 

• Provides lead wire protection 

in heavy duty environments. 



• Available with single or dual-element sensors 

22-Gauge PTFE-Insulated Wire 

Armor Cable 0.34 (8.64) O.D. 


C1 1 1 /2 C5 24 

C2 3 C6 50 

C3 6 C7 75 

C4 12 C8 100 

0.375 (10) Diameter 0.445 (11) 

Sensor 

6.0 

Y 

(152) 

2.75 (70) [Max.] 



D1–D8, ARMORED CABLE LEAD WIRE EXTENSION 

WITH ELECTRICAL PLUG 

• Provides lead wire protection in 

heavy-duty environments 

• Provides quick-disconnect capability 



D1 1 1 /2 D5 24 

D2 3 D6 50 

D3 6 D7 75 

D4 12 D8 100 

Mates with Option Codes L1–L8 

Armor Cable 0.34 (8.64) OD) 


Sensor 

Y 

2.75 (70) [Max.] 



68


00813-0100-2654, Rev GB 

April 2010 


L1–L8, ARMORED CABLE MATING PLUG WITH LEAD 

WIRE EXTENSION 

• Completes quick-disconnect capability for armored cable 


• Twisted lead wire extension for lowest cost installation 

22-Gauge PTFE Lead Wire 


L1 1 1 /2 L5 24 

L2 3 L6 50 

L3 6 L7 75 

L4 12 L8 100 

Mates with Option Codes D1–D8 

Y 



F1, 4-PIN BAYONET CONNECTOR 

• Provides quick-disconnect capability 

• Withstands 100 percent relative humidity with connector mate 

• Available for capsule and general purpose with 4-wire lead 

wire configuration only 

Receptance Shell and Pin 

Finish Are Nickel Plate 

0.652 (17) 

Dia. Max. 

Mates with Option Codes H1–H8 


Wiring Schematic 

A 

B 

4-Wire 

C 

D 

Not available for 58C, 68Q, and 183 sensors, or with FM or CSA explosion-proof, or with SAA or ATEX/ISSeP flameproof approval (option 

codes E5, E6, E7, or E1) 


3.0 (76) 

2.0 (51) 

150 °C Max. for Series 68 and 78 

Sensor 

H1–H8, 4-PIN CONNECTOR MATING PLUG WITH LEAD 

WIRE EXTENSION 

• Completes the quick-disconnect capability of connector 

• Provides twisted lead wire extension for 

remote installations 


with connector mate 

• F1 connector is required if H1–H8 lead wire extension is used 


H1 1 1 /2 H5 24 

H2 3 H6 50 

H3 6 H7 75 

H4 12 H8 100 

22-Gauge PTFE 

Lead Wire 

4-Pin Connector (Mates with Option Code F1) 

Y 


codes E5, E6, E7, or E1) 


69



00813-0100-2654, Rev GB 

April 2010 

J1, MOISTURE-PROOF SEAL ASSEMBLY FOR 

ARMORED CABLE 

• Prevents moisture migration through armored cable 

• For use in humid environments but not for direct liquid 

immersion 

• Non-disconnectable type assembly with armored cable 

and sensor 

Nipple, 304 SST, 1 /2–14 ANPT 1.12 (28.45) Long 

Moisture-Proof Seal (J1) 

Compression Fitting 

Sensor 

J1 

Armored Cable Lead Wire 

(Specify Option Codes C1–C8) 


codes E5, E6, E7, or E1). 

Moisture-proof seal assembly must be ordered with armored cable lead wire extension (option codes C1 – C8) 


THERMOWELLS 

To simplify ordering, the previous Series 79, 80, and 81 thermowell 

offerings are all included in the new Series 91 thermowell option. 

Materials 

Rosemount Thermowells are supplied in most materials required 

for industrial applications. Standard materials are 316 SST, 304 

SST, and C1018 carbon steel. For corrosive environments, special 

materials such as Monel ® , Hastelloy ® , and Inconel 600 are 

available. Consult factory for other material availability. 

Strength (Pressure and Flow Vibration) 

The strength of a thermowell depends on several parameters that 

relate thermowell construction to the installation environment. For 

most industrial applications, standard Rosemount thermowells 

provide the necessary strength if the material, style, and length are 

correct for the application. The proper selection of a thermowell 

depends on fluid type, temperature, pressure, and fluid velocity. It 

is important to note that most thermowell failures are caused by 

vibration that is induced by fluid flow. If static pressure strength is a 

major consideration, refer to Table 27 for standard material ratings 

for a 1 /2-inch tip. Tapered thermowells are offered for additional 

strength. 

Construction 

All thermowell bodies with an overall length less than 42-in. are 

machined from solid bar stock to ensure water-tightness. Flange 

mounts are welded to the thermowell body. Standard construction 

provides immersion lengths (U) from 2½ to 48 inches with overall 

lengths (L) from 4 to 59 inches respectively. Thermowells with 

overall lengths larger than 42-in. will be a 3-piece welded 

construction. Consult the factory for more information on welded 

3-piece construction thermowells. 


The part number is etched on each thermowell. Additional tagging 

for specific customer requirements is available. 

Installation 

For dimensional drawings of Thread Mounted, Weld Mounted, and 

Flange Mounted Thermowells, refer to Figure 20, 22, and 24. 

Strength Calculation 

Rosemount Inc. has the ability to perform thermowell frequency 

calculations to verify that the thermowell dimensions you provide 

are appropriate for your specific application. To take advantage of 

this calculation, fill out and return the Configuration Data Sheet. 

TABLE 27. Thermowell Material Rating 

Process Rating (1) (psi) at Temperature (°F) 

Material Recommended Usage 0 °F 300 °F 500 °F 700 °F 900 °F 1100 °F 1300 °F 

304 SST Good resistance to oxidation 5600 4800 4700 4600 3400 2400 780 

316 SST Good resistance to corrosion. Better resistance to 5600 5400 5300 5200 4400 3200 1250 

chemical attack than 304 SST 

Carbon Steel For non-corrosive service 3700 3700 3700 3650 2000 — — 

(1) In case of an explosion, the integrity of the thermowell is maintained to the specified pressures. 

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TABLE 28. Series 91 Thermowells 



Model 

Description 

0091 Thermowells 




A Type 316 SST ★ 



D 316L SST ★ 

E 304L SST ★ 


F Alloy 20 

G Alloy 400 

H Alloy 600 

J Alloy C-276 

L 

Alloy B 

M 


P 


R Nickel 200 

T 

Titanium 

U (2) 

316 SST with tantalum sheath 

V 

310 SST 

W 

321 SST 

X 

Special Material 

Y 

316Ti SST 

Z 


Sensor/Immersion Length (U) in inches (1) 



015 (2) 1.5 in. ★ 

020 2.0 in. ★ 

025 2.5 in. ★ 

030 3.0 in. ★ 

035 3.5 in. ★ 

040 4.0 in. ★ 

045 4.5 in. ★ 

050 5.0 in. ★ 

055 5.5 in. ★ 

060 6.0 in. ★ 

065 6.5 in. ★ 

070 7.0 in. ★ 

075 7.5 in. ★ 

080 8.0 in. ★ 

085 8.5 in. ★ 

090 9.0 in. ★ 

095 9.5 in. ★ 

100 10.0 in. ★ 

105 10.5 in. ★ 

110 11.0 in. ★ 

115 11.5 in. ★ 

120 12.0 in. ★ 

125 12.5 in. ★ 

130 13.0 in. ★ 

135 13.5 in. ★ 

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140 14.0 in. ★ 

145 14.5 in. ★ 

150 15.0 in. ★ 

155 15.5 in. ★ 

160 16.0 in. ★ 

165 16.5 in. ★ 

170 17.0 in. ★ 

175 17.5 in. ★ 

180 18.0 in. ★ 

185 18.5 in. ★ 

190 19.0 in. ★ 

195 19.5 in. ★ 

200 20.0 in. ★ 

205 20.5 in. ★ 

210 21.0 in. ★ 

215 21.5 in. ★ 

220 22.0 in. ★ 

225 22.5 in. ★ 

230 23.0 in. ★ 

240 24.0 in. ★ 

250 25.0 in. ★ 

260 26.0 in. ★ 

270 27.0 in. ★ 

280 28.0 in. ★ 

290 29.0 in. ★ 

300 30.0 in. ★ 

310 31.0 in. ★ 

320 32.0 in. ★ 

330 33.0 in. ★ 

340 34.0 in. ★ 

350 35.0 in. ★ 

360 36.0 in. ★ 

370 37.0 in. ★ 

380 38.0 in. ★ 

390 39.0 in. ★ 

400 40.0 in. ★ 

410 41.0 in. ★ 

420 42.0 in. ★ 

430 43.0 in. ★ 

440 44.0 in. ★ 

450 45.0 in. ★ 

460 46.0 in. ★ 

470 47.0 in. ★ 

480 48.0 in. ★ 

Thermowell Mounting Style Stem Style Tip A (in.) Root B (in.) 



T20 Thread, 1 /2–14 ANPT Stepped 0.50 0.63 ★ 

T22 Thread, 3 /4–14 ANPT Stepped 0.50 0.75 ★ 

T24 Thread, 1–11.5 ANPT Stepped 0.50 0.88 ★ 

T26 Thread, 3 /4–14 ANPT Tapered 0.63 0.88 ★ 

T28 Thread, 1–11.5 ANPT Tapered 0.63 1.06 ★ 

T30 Thread, 1 1 /2–11.5 ANPT Tapered 0.75 1.50 ★ 

T32 Thread, 1 /2–14 ANPT Straight 0.50 0.50 ★ 

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T36 Thread, 1–11.5 ANPT Straight 0.75 0.75 ★ 


T44 Thread, 1 /2–14 ANPT Tapered 0.50 0.63 ★ 

W38 Weld, 3 /4-in. pipe Stepped 0.50 0.75 ★ 

W40 Weld, 1-in. pipe Stepped 0.50 0.88 ★ 

W42 Weld, 3 /4-in. pipe Tapered 0.63 0.88 ★ 

W44 Weld, 1-inch Pipe, Tapered 0.75 1.00 ★ 

W46 Weld, 1 1 /4-inch Pipe Tapered 0.75 1.25 ★ 

W48 Weld, 3 /4-inch Pipe Straight 0.75 0.75 ★ 

W50 Weld, 1-inch Pipe Straight 0.75 0.75 ★ 

F10 Flange, F = 2-inch, Class 150 Straight 0.75 0.75 ★ 


F52 Flange, F = 1-inch, Class 150 Stepped 0.50 0.75 ★ 

F54 Flange, F = 1½-inch, Class 150 Stepped 0.50 0.75 ★ 


F58 Flange, F = 1-inch, Class 150 Tapered 0.75 1.00 ★ 

F60 Flange, F = 1½-inch, Class 150 Tapered 0.75 1.00 ★ 



F66 Flange, F = 1½-inch, Class 150 Straight 0.75 0.75 ★ 


F72 Flange, F = 1½-inch, Class 300 Stepped 0.50 0.75 ★ 



F78 Flange, F = 1½-inch, Class 300 Tapered 0.75 1.00 ★ 



F84 Flange, F = 1½-inch, Class 300 Straight 0.75 0.75 ★ 


F88 (3) Flange, F = 1-inch, Class 600 Stepped 0.50 0.75 ★ 

F90 (3) Flange, F = 1½-inch, Class 600 Stepped 0.50 0.75 ★ 

F92 (3) Flange, F = 2-inch, Class 600 Stepped 0.50 0.75 ★ 

F94 (3) Flange, F = 1-inch, Class 600 Tapered 0.75 1.00 ★ 

F96 (3) Flange, F = 1½-inch, Class 600 Tapered 0.75 1.00 ★ 


F02 (3) Flange, F = 1-inch, Class 600 Straight 0.75 0.75 ★ 

F04 (3) Flange, F = 1½-inch, Class 600 Straight 0.75 0.75 ★ 

F06 (3) Flange, F = 2-inch, Class 600 Straight 0.75 0.75 ★ 





Q02 (5) Sanitary, 1-in.,Tri-Clamp Stepped 0.50 0.75 ★ 

Q04 (6) Sanitary, 1 1 /2-in., Tri-Clamp Stepped 0.50 0.75 ★ 

Q06 (6) Sanitary, 2-in., Tri-Clamp Stepped 0.50 0.75 ★ 

Q08 (6) Sanitary, 3-in.,Tri-Clamp Stepped 0.50 0.75 ★ 

Q20 (6) Sanitary, 3 /4-in., Tri-Clamp Straight 0.44 0.44 ★ 

Q22 (6) Sanitary, 1-in.,Tri-Clamp Straight 0.50 0.50 ★ 

Q24 (6) Sanitary, 1 1 /2-in., Tri-Clamp Straight 0.50 0.50 ★ 

Q26 (6) Sanitary, 2-in., Tri-Clamp Straight 0.50 0.50 ★ 

Q28 (6) Sanitary, 3-in.,Tri-Clamp Straight 0.50 0.50 ★ 

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Thermowell Lagging Length (T) in. 



T000 0.0 in. ★ 

T005 0.5 in. ★ 

T010 1.0 in. ★ 

T015 1.5 in. ★ 

T020 2.0 in. ★ 

T025 2.5 in. ★ 

T030 3.0 in. ★ 

T035 3.5 in. ★ 

T040 4.0 in. ★ 

T045 4.5 in. ★ 

T050 5.0 in. ★ 

T055 5.5 in. ★ 

T060 6.0 in. ★ 

T065 6.5 in. ★ 

T070 7.0 in. ★ 

T075 7.5 in. ★ 

T080 8.0 in. ★ 

T085 8.5 in. ★ 

T090 9.0 in. ★ 

T095 9.5 in. ★ 

Instrument Connection Thread 


P 

D 


1 /2–14 NPSM ★ 

1 /2–14 ANPT for CSA ★ 





R01 (6) Special External Pressure Test ★ 













NACE Approval 















R09 (7)(8) Concentric Serration of Thermowell Flange Face ★ 

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R10 (7)(8) Flat Face Flange ★ 

Vent Hole 







R14 (9) Thermowell Special Surface Finish (12 R a Max) (Maximum (U) length = 22.5 in.) ★ 




R16 (3)(7)(8) Ring Joint Flange (Not available with 0-in. (T) length) ★ 

Electropolish 



R20 (10) Electropolish ★ 















R24 

CRN Marking for British Columbia 

R25 

CRN Marking for Alberta 

R26 

CRN Marking for Saskatchewan 

R27 

CRN Marking for Manitoba 

R28 

CRN Marking for Ontario 

R29 

CRN Marking for Quebec 

R30 

CRN Marking for New Brunswick 

R31 

CRN Marking for Nova Scotia 

R32 

CRN Marking for Prince Edward Island 

R33 

CRN Marking for Yukon Territory 

R34 

CRN Marking for Northwest Territory 

R35 

CRN Marking for Nunavut 

R36 

CRN Marking for Newfoundland and Labrador 



R37 

Thermowell From Hex stock 

(1) Thermowells with an overall lengths (“U” + “T” + 1.75-in.) of 36-in. or less are machined from solid bar stock. Thermowells with an overall length larger than 42-in. will be constructed 


(2) Available in straight stem only 

(3) Not available with 0-in. (T) length. 

(4) Not available with 0- or 1 /2-in. (T) length. 


(6) Maximum (U) length = 42.0-in. 



(9) Maximum (U) length = 22.5 inches. 

(10) Not available on flanged thermowells and L lengths longer than 24”. 


Typical Model 

Number Model Material 

Immersion 

Length 

Mounting Style 

Lagging 

Length Connection Thread Additional Options 

0091 A 030 F52 T040 P R01 

R05 

R07 

75



00813-0100-2654, Rev GB 

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FIGURE 20. Thread Mounted Thermowells 

Straight 

Lagging Extension, Nom. 

T 

Wrench and Thread 

Allowance 

1.75 (44) 

U 

Inside Diameter 0.26 (7) 

H 

½–14 NPSM * 0.875 

(22) Max. 

P Process 

Mounting Thread 

A Tip Diameter 

R37 Option 

Hex Stock 

L 

0.25 (6) 

Nominal 

Thread (P) 

0.5 – 0.75 ANPT 1.125 

1–11.5 ANPT 1.375 

Hex Size Inches (H) 

Tapered 


T 


Allowance 

1.75 (44) 

U 

Inside Diameter 

0.26 (7) 

H 

0.875 

(22) Max. 

½–14 NPSM * 0.25 (6) 

Root Diameter B 

P Process 



Nominal 

L 

Thread (P) 


0.5 – 0.75 ANPT 1.125 

1–11.5 ANPT 1.375 

* 1 /2–14 ANPT threads are available 


76


00813-0100-2654, Rev GB 

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FIGURE 21. Thread Mounted Thermowells (continued) 

Stepped 


T 


Allowance 

1.75 (44) 

B 

U 

2.5 (64) 

Root Diameter 

Inside Diameter 

0.26 (7) 

H 

R37 Option 

Hex Stock 

0.875 

(22) Max. 

½–14 NPSM * 0.25 (6) 

P Process 


L 


Nominal 

Stepped, For Thermowells with Overall Length Greater than 42-in. (3-Piece Construction) 


Allowance 

T 1.75 (44) 

½–14 NPSM * Pipe B 

U 

2.5 (64) 

H 

R37 Option 

Hex Stock 

L 

Welds 

A Tip 

Diameter 


0.25 (6) 

Thread (P) 


0.5 – 0.75 ANPT 1.125 

1–11.5 ANPT 1.375 



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FIGURE 22. Weld Mounted Thermowells 

Straight 

T 

1.75 

(44) 

U 


½–14 NPSM * 0.25 (6) Nominal 


0.875 (22) Max. 

S Socket Weld Diameter 

L 

Pipe Size 

Socket Size (S) Diameter 

0.75-in. 1.050 ±0.010 

1-in. 1.315 ±0.010 

Tapered 

T 

1.75 

(44) 

U 

½–14 NPSM * 0.25 (6) Nominal 

Root Diameter B 


0.875 (22) 


L 


Pipe Size 


0.75-in. 1.050 ±0.010 

1-in. 1.315 ±0.010 



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00813-0100-2654, Rev GB 

April 2010 


FIGURE 23. Weld Mounted Thermowells (continued) 

Stepped 

T 

1.75 

(44) 

U 

½–14 

2.5 (64) 


0.875 (22) Max. 

NPSM * 0.25 (6) 

B Root Diameter 


L 

Nominal 



½–14 

U 

T 1.75 (44) 

Pipe 

2.5 (64) 



L 

Welds 

0.25 (6) 

Pipe Size 


0.75-in. 1.050 ±0.010 

1-in. 1.315 ±0.010 



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00813-0100-2654, Rev GB 

April 2010 

FIGURE 24. Flange Mounted Thermowells 

Straight 


G 

T 

½–14 

1.7 

5 

U 

Flange Mount 


F 

NPSM * 0.875 

(22) 

Max. 

H 

L 



E 

Tapered 


G 

T 

½–14 

NPSM * 

1.75 

(44) 

U 

Flange 

Mount 


0.875 

(22) Max. 

R Root Diameter 


F 

E 

H 

L 


Size (in.) O.D. (E) Circle (F) # of holes 

and dia. (G) 

Class 150 Class 600 

thickness 

(in.) (H) 



1.0 4.25 3.12 four-0.625 0.5625 1.0 4.88 3.5 four-0.75 0.94 

1.5 5.0 3.88 four-0.625 0.6875 1.5 6.12 4.5 four-0.88 1.13 

2.0 6.0 4.75 four-0.75 0.75 2.0 6.5 5.0 eight-0.75 1.25 

3.0 7.5 6.00 four-0.75 0.94 Class 900 and 1500 

Class 300 1.5 7.0 4.88 four-1.12 1.5 

1.0 4.88 3.5 four-0.75 0.69 Class 2500 

1.5 6.12 4.5 four-0.88 0.81 1.5 8.0 5.75 four-1.25 2.0 

2.0 6.5 5.0 eight-0.75 0.88 

thickness 

(in.) (H) 



80


00813-0100-2654, Rev GB 

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FIGURE 25. Flange Mounted Thermowells (continued) 

Stepped 


G 

T 

½–14 

NPSM * 

1.75 

(44) 

U 

Flange 

Mount 

2.5 

A Tip 

Diameter 

0.875 

(22) Max. 

R Root 

Diameter 


F 

H 

L 


E 


G 

T 

1.75 

(44.5) 


½–14 

NPSM * 

Weld 

Flange 

Weld 

Pipe 

U 

2.5 (64) 

F 

E 

Welds 





Class 150 Class 600 

thickness 

(in.) (H) 



1.0 4.25 3.12 four-0.625 0.5625 1.0 4.88 3.5 four-0.75 0.94 

1.5 5.0 3.88 four-0.625 0.6875 1.5 6.12 4.5 four-0.88 1.13 

2.0 6.0 4.75 four-0.75 0.75 2.0 6.5 5.0 eight-0.75 1.25 

3.0 7.5 6.00 four-0.75 0.94 Class 900 and 1500 

Class 300 1.5 7.0 4.88 four-1.12 1.5 

1.0 4.88 3.5 four-0.75 0.69 Class 2500 

1.5 6.12 4.5 four-0.88 0.81 1.5 8.0 5.75 four-1.25 2.0 

2.0 6.5 5.0 eight-0.75 0.88 

L 

thickness 

(in.) (H) 



81



00813-0100-2654, Rev GB 

April 2010 

Hazardous Area Approvals 

SENSORS 

Factory Mutual (FM) Approval 

E5 Explosion Proof for Class I, Division 1, Groups B, C, and D. 

Dust-Ignition Proof for Class II/III, Division 1, Groups E, F, 

and G. Suitable for indoor and outdoor (NEMA 4X) 

hazardous locations. Install in accordance with Rosemount 

drawing 00068-0013. 

Canadian Standards Association (CSA) Approval 



and G. Suitable for Class I, Division 2, Groups A, B, C, and 

D. Suitable for indoor and outdoor (CSA Enclosure Type 4X) 

hazardous locations. Install in accordance with Rosemount 

drawing 00068-0033. 

To ensure approval compliance install sensors in exact 

accordance with the specified installation drawings (see 

Figure 27). 

CONNECTION HEADS 

Factory Mutual (FM) Approval 



and G. Painted models are suitable for indoor and outdoor 

(NEMA 4X) hazardous locations. Unpainted models are 

suitable for indoor and outdoor (NEMA 4) hazardous 

locations. When used with temperature sensors, connection 

heads must be installed in accordance with Rosemount 

drawing 00068-0013. 

Canadian Standards Association (CSA) Approval 

E6 Explosion Proof for Class I, Division 1, Groups C, and D. 

Dust-Ignition Proof for Class 

II/III, Division 1, Groups E, F, and G. Suitable for Class I, 

Division 2, Groups A, B, C, and D. 

Painted models are suitable for indoor and outdoor (CSA 

Enclosure Type 4X) hazardous locations. Unpainted models 

are suitable for indoor and outdoor (CSA Enclosure Type 4) 

hazardous locations. When used with temperature sensors, 

connection heads must be installed in accordance with 

Rosemount drawing 00068-0033. 

To ensure approval compliance, install connection heads in 

exact accordance with the specified installation drawings 

(see Figure 27). 

SENSOR AND TRANSMITTER 

ASSEMBLIES 

ATEX Approval 

E1 

ATEX Explosion- proof 

Certificate Number: KEMA99ATEX8715 

ATEX Marking: II 2 G 

EEx d IIC T6 (– 40°C T amb +65°C) 

Rosemount Series 68 and 78 RTD and Series 183 

thermocouple temperature sensors with spring-loaded or 

general purpose style sensors are approved only for direct 

mount to the Rosemount 3144P, 3244MV, 644, 244E, 144H, 

and 248 or mounted to the Rosemount Connection Head. 

To ensure approval compliance, specify the E1 option on 

both the sensor and the transmitter at the time of ordering. 

NOTE 

Rosemount series 68 and 78 RTD and Series 183 Thermocouple 

Temperature Sensors can be supplied as a replacement part with 

the E1 option for installation in an existing temperature 

measurement assembly. 

Standard Association of Australia (SAA) 

Flameproof Approval 

E7 Ex d IIC T6 (T amb = –20 to 60 °C) 

Rosemount Series 68 and 78 RTD and Series 183 

thermocouple temperature sensors with spring-loaded or 

general purpose style sensor adapters are approved for 

direct mount to the Rosemount 144, 244E, 644, 3144 and 

3244MV Smart Temperature Transmitters or mounted to the 

Rosemount Connection Head. 

To ensure approval compliance, specify the E7 option on 

both the sensor and the transmitter at the time of ordering, 

and install in exact accordance with Rosemount drawing 

03144-0225 (see Figure 30). 

82


00813-0100-2654, Rev GB 

April 2010 


Factory Mutual (FM) Explosion-Proof 

FIGURE 26. Installation Drawing 00068-0013, Rev. AD 

NOTE 

For Hand-Tight Assembly Option XA: End-User (installer) must unscrew threaded joints, then reassemble and tighten all joints per installation 

drawing 00068-0013. 

83



00813-0100-2654, Rev GB 

April 2010 

Canadian Standards Association (CSA) Explosion-Proof 

FIGURE 27. Installation Drawing 00068-0033, Rev. AB Page 1 of 2 

NOTE 

For Hand-Tight Assembly Option XA: End-User (installer) must unscrew threaded joints, then reassemble and tighten all joints per installation 

drawing 00068-0033. 

84


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FIGURE 28. Installation Drawing 00068-0033, Rev. AB Page 2 of 2 

85



00813-0100-2654, Rev GB 

April 2010 

ATEX Flameproof 

FIGURE 29. Installation Drawing 03144-0324, Rev. AB 

86


00813-0100-2654, Rev GB 

April 2010 


Standard Association of Australia (SAA) Flameproof 

FIGURE 30. Drawing 03144-0325, Rev. AD 

87


00813-0100-2654, Rev GB 

April 2010 


Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc. 

Teflon is a registered trademark of E.I. du Pont de Nemours & Co. 

Hastelloy is a registered trademark of Haynes International. 

Monel and Inconel is a registered trademark of International Nickel Co. 

All other marks are the property of their respective owners. 

Standard Terms and Conditions of Sale can be found at www.rosemount.com\terms_of_sale 

Emerson Process Management 

Rosemount Inc. 

8200 Market Boulevard 

Chanhassen, MN 55317 USA 

T (U.S.) 1-800-999-9307 

T (International) (952) 906-8888 

F (952) 949-7001 

www.rosemount.com 

Emerson Process Management 

Heath Place 

Bognor Regis 

West Sussex PO22 9SH 

England 

T 44 (1243) 863 121 

F 44 (1243) 867 554 

Emerson Process Management Asia 

Pacific Private Limited 

1 Pandan Crescent 

Singapore 128461 

T (65) 6777 8211 

F (65) 6777 0947 

Enquiries@AP.EmersonProcess.com 

00813-0100-2654 Rev GB 4/10

Rosemount Temperature Sensors and Accessories - Transcat

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